recursal/Fanatic-Fandom huggingface dataset:
AML ez1073-500

**AML ez1073-500** is a pre-amp and equalizer for the 500 series.

## Official description

>
> **"Carnhill" Class A mic/line amp/EQ - API 500 series format**
>
>
> The ez1073-500 is a Class A, mic pre-amp, line amp and EQ/Filter module which occupies two slots in a 500 series rack. Fully populated with Carnhill transformers and inductors to achieve its distinctive classic sound. This high-end hand-built British module provides an affordable solution for the modern cost conscious studio.
>
>
>
> * Classic 3 stage (Class A) amplifier design
> * All discrete component (no surface mount devices)
> * Entirely hand assembled and tested in the England to exacting quality standards.
> * Mic Input: Carnhill transformer balanced (Classic VTB9045) +10dB to +65dB gain, rotary switchable in 5dB steps and switchable 300/1200 Ohm impedance input.
> * Line Input: Carnhill transformer balanced (Classic VTB9046) - 20dB to +20dB, rotary switchable in 4dB steps (centre 0dB), 10k Input Impedance
> * Line Output: Carnhill transformer balanced (Classic full size output transformer)
> * EQ/Filter Stage: 3 inductor (Class A) amplifier design
> * HF (12kHz) +/- 16dB gain continuously variable
> * MF (switchable; 360Hz, 700Hz, 1.6kHz, 3.2kHz, 4.8kHz & 7.2kHz) +/- 16dB gain continuously variable
> * LF (switchable; 35Hz, 60Hz, 110Hz & 220Hz) +/- 16dB gain continuously variable
> * Low Pass Filter (switchable; 50Hz, 80Hz, 160Hz & 300Hz) -18dB per Octave
> * Phantom and polarity switches
> * The XLR behind the left hand side is the Mic Input
> * The XLR behind the right hand side is the Line Input
> * The output is duplicated on both of the output XLRs
> * Stainless steel chassis
> * Total current consumption 110mA (per unit)
>
>
> For use in API (and compatible) Lunchbox and VPR500 racking systems.
>
>
>
>
Big Bear Audio MP1

**Big Bear Audio MP1** is a pre-amp for the 500 series, manufactured by Big Bear Audio.

## History

The Big Bear Audio MP1 was released in 2016.

## Official description

>
> The MP1 is a statement of electronic and aesthetical design. It has been designed from the ground up to provide producers, recording and mix engineers of every level with an innovative and intuitive Colour amplifier.
>
>
> The Colour platform created by DIY Recording Equipment pathed the way for affordable analogue distortion, the MP1 takes this platform further combining a low noise discrete mic pre with a high impedance discrete Instrument input.
>
>
> Features
>
>
>
> * Discrete Class A Mic/Line Amplifier
> * Interchangeable DIYRE Colour Slot
> * Discrete Instrument Input
> * Burr-Brown Electronically Balanced Output
> * Audio Grade Capacitors
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/aes-2016-los-angeles-ca-usa-sep-29-oct-2-los-angeles-convention-center/1115238-big-bear-audio-mp1.html
UI can be used to enhance the narrative experience for the player

User Interface is something developers should always place a great deal of thought into when creating their game. There are different ways a developer can present their UI with each having their own pros and cons. A diegetic UI for example can be used to create a more believable experience for the player that is not only immersive but serves to enhance the narrative. It may be difficult to find ways to convey things like health to a player but something as simple as having your spaceship look more war torn after a heated battle is more conducive with the narrative as opposed to a floating health bar in bottom left corner of the screen.

### **Example 1: Dead Space**

The developers of Dead Space used a diegetic UI to better enhance the survival horror narrative of their game. They went through great lengths to make sure all relevant information such as health, ammo, inventory, and navigation assistance were all presented in game directly on or around the main character. This not only added to the immersion but also supplemented the narrative by keeping the player constantly in the world they created. If a player wanted to look at their items they needed to do so in game and in real time. This created more tension and forced the player to make sure they were absolutely safe because doing so and continue to tell the story Dead Space was presenting to the player which was one of isolation and continuous fear.

### **Eample 2: XIII**

In XIII, the game utilizes a comic book aesthetic, with heavy cel shaded outlines and flat colors. In addition to the aesthetic, the interface uses pop up panels and dynamic text boxes to show events and interactions occurring in another location. This "cheesy 80s comic book style" of presentation plays into the spy thriller narrative that the game has.
Bereich03 Audio LC-PAD

**Bereich03 Audio LC-PAD** is a pad and low-cut filter for the 500 series, manufactured by Bereich03 Audio.

## History

The Bereich03 Audio LC-PAD was released in 2014, apparently in a limited run.

## Official description

>
> A friend of mine asked me, if I could build him a PAD and the LowCut of my LC-HC in one module. He wants to push his Preamps to get some extra character.
>
>
> The PAD is passive and has three position. On each position you can choose from five different values.
>
>
>
> * A: -6, -8, -10, -12, -14
> * B: -10, -12, -14, -16, -18
> * C: -14, -16, -18, -20, -24
>
>
> The LowCut is the same as the LC-HC. The frequency is continuously adjustable from 20Hz to 220Hz. The Boost is at the corner frequency. It starts at -3dB and goes up to +10dB. The slope is 12dB/oct.
>
>
> Both Bypass are hardwire with relays.
>
>
>
>

## References

1. ↑ 1.0 1.1 https://www.gearslutz.com/board/product-alerts-older-than-2-months/937687-lc-pad-500-series-bereich03-audio.html
Burl Audio B1

**Burl Audio B1** is a pre-amp for the 500 series, manufactured by Burl Audio.

## Official description

>
> THE B1 and B1D MICROPHONE PRE AMP / DI
>
>
> Step Back – Here come the B1 and B1D… Introducing the B1 and B1D MICROPHONE PRE AMPS from BURL AUDIO. Based on the API 500 series form factor, the B1 was designed to compliment the B2 BOMBER ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX2 output transformer, the B1 MIC PRE delivers warmth with depth and clarity.
>
>
> The B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1 amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.
>
>
> The B1 and B1D come complete with both Gain and Level controls. If you want that heavy, gainy tone, crank up the stepped gain control and offset that with the level control. If clean tone is your thing, turn the gain down and crank up the level. For ribbon mics and other low impedance sources, the B1 has a transformer coupled impedance select. The B1 was rigorously tested with the popular Royer R-121 in the low impedance setting, and we think it sounds pretty f\*\*\*ing bitchin’’ on guitar amps.
>
>
> The B1 gets the best out of any microphone, whether it be dynamic, condenser or ribbon.Use the B1’s 1/4” instrument/line input on the front panel, plug in, crank up the gain and go. The PAD switch allows for hot signals and balanced line inputs through the mic XLR on the back panel. Run your tracks or mixes through the B1 for warmth and glue.
>
>
>
> * BURL custom BX3 input transformer
> * BURL custom BX2 nickel ( B1) or BX4 iron ( B1D ) output transformer
> * audiophile, discrete, class-A, direct-coupled, capacitor free circuit path
> * stepped gain control
> * independent output level control
> * 70 dB gain
> * impedance select
> * 1/4” front panel DI input
> * 30 dB pad for hot signals and balanced line level input
> * phantom power
> * phase reverse
> * tri-colored gain level indication
> * Love and Thunder!
>
>
>
Hacienda Labs 169

**Hacienda Labs 169** is a pre-amp for the 500 series, manufactured by Hacienda Labs.

## History

The Hacienda Labs 169 was released in 2016.

## Official description

>
> **HL169**
>
>
> Based on the rigorous Switzerland brand vintage mic pre, HL169 was developed in close collaboration between the picky sound engineers and electronicians from Les Studios de l'Hacienda (France).
>
>
> "We need a clear and warm preamp that can become fat and fit all types of mics perfectly, including ribbon"
> This challenge eventually led us to combine the precision of input Studer (Neutrik transformer and discrete circuit) with the beautiful Neve presence and output power (Carnhill output transformer inside).
> The result is explosive! Incorporating a smooth and finely adjustable low-cut, the HL169 preamp serves the musicality and intent of your takes and a complete mastery of recording levels through the attenuation potentiometer.
> Need to use extreme wide saturation of the HL169 without saturating the input of your recorder on a snare drum for example? It's possible !
> Add to that an instrument input (Hi-Z), a pad (-30dB), a precision gain control (two available levels, 67dB in all) and you have the Swiss Army knife preamp.
> Precision, musicality, versatility and character were the key words to develop the HL169.
>
>
> **Technical specification:**
>
>
>
> * Format : 500 series chassis, compatible API
> * Max gain: 67dB
> * Pad: -30dB
> * Output attenuation: 0dB / -30dB Max
> * Phantom power +48V
> * Inverseur de phase
> * Discret HPF from 20Hz to 315Hz
> * Input transformer: Neutrik NTM-4
> * Output transformer: Carnhill VT2499
> * Mic Z input: 1K2 ohm
> * Hi Z input: 1M ohm
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/1076453-hacienda-labs-presents-hl-169-hl-4000-500-series-modules.html
Wunder Audio Cobalt

**Wunder Audio Cobalt Pre** is a pre-amp for the 500 series, manufactured by Wunder Audio.

## History

The Wunder Audio Cobalt Pre was released in 2012.

## Official description

>
> The Wunder Audio Cobalt Pre is the result of years of testing, development and enhancements made by Wunder Audio in Austin, TX with the PEQ1 and PEQ2. The inside of this discrete Class A build-quality module is pristine, with meticulous wiring and impeccable soldering. Top-of-the-line components are used at every junction, highlighted by Wunder's own custom wound transformers. The transformers are made using the same custom laminations of Nickel/Iron/Cobalt that were used in the original Zeppelin "Allotrope" modules; which inspired the original Wunder Audio PEQ1. The transformers are so beefy that they barely fit in the unit's case.
>
>
> The Cobalt Pre has the same circuit, input transformer, and output transformer as the Wunder Audio PEQ2. All aspects of this design, from the metalwork to the components in the circuit, are made to the same exact standards as the PEQ2 but remade for the 500 series format.
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/781025-wunder-audio-allotrope-eq.html
Radial PowerTube

**Radial Engineering PowerTube** is a pre-amp for the 500 series, manufactured by Radial Engineering.

## History

The Radial PowerTube was released in 2011.

## Official description

>
> * High voltage 12AX7 tube drive with 60dB of gain
> * Smooth sounding Jensen Transformer input
> * Hand inserted 100% discrete class-A electronics
> * Single wide module fits all 500 series rack formats
>
>
> The Radial PowerTube is an 'old school' 100% discrete class-A vacuum tube microphone amplifier intended to capture the essence of the voice or instrument while adding the rich harmonics, warmth, and character of a transformer coupled tube circuit.
>
>
> Designed to fit inside the Radial Workhorse and other 500 series racks, the 'single-wide' PowerTube begins with an ultra low-noise Jensen input transformer. This exhibits near perfect frequency response while producing the warm Bessel curve Jensen is legendary for. The signal is then amplified via a select 12AX7 tube using an innovative non-radiating charge pump that supplies 140 volts to the tube to deliver the excitement and character of a high-voltage vintage tube amplifier. This feeds a class-A balanced output stage that together, can produce as much as 60dB of gain. This makes the PowerTube ideal for use with all microphones.
>
>
> Features include an easy-access front panel XLR input with a safely recessed 48V phantom power switch. To optimize signal-to-noise the PowerTube is equipped with fully variable trim and gain controls. A 10 segment LED bar graph provides visual feedback and driving the PowerTube into the red is encouraged. This increases the grit, harmonic content and distortion. For even more character, activating the Air adds a slight edge to a male vocal or sparkle on an acoustic guitar. Low frequency resonance is easily tamed using the high-pass filter. For added pleasure, the PowerTube comes factory-loaded with a select 12AX7 tube along with a second Tonebone distortion pedal tube for more grit and madness.
>
>
> The Radial PowerTube... the true character of a world class vintage tube preamp without the noise!
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/663088-radial-powertube-500-12ax7-pre.html
AnaMod Realios A9031

**AnaMod Realios A9031** is a pre-amp for the 500 series.

## Official description

>
> **The Classic Dick Swettenham Olympic Studios Design**
>
>
> Dick Swettenham’s three transistor microphone preamp design is truly a thing of beauty. The sound of these types of microphone preamps is legendary. You’ve heard it on records made at Olympic studios in the 60s and 70s. It’s now available again in a 500 series format package.
>
>
> This version features a class-A transistor output stage which will drive the most demanding of loads. This feature is most welcome since the original Olympic microphone preamps were integral parts of their respective mixing desks and never meant to be connected directly to an output.
>
>
> Other additions include: finer gain steps (5 dB), a high-impedance FET DI, phase reverse switch, and switchable phantom power.
>
>
> **A9031 Specifications**
>
>
>
> * Microphone Input Impedance: 1.2KΩ, balanced
> * DI Input Impedance: > 3.3MΩ
> * Output Impedance: less than 50Ω
> * Max. Output Level: +32dBu, transformer balanced
> * Gain: 20 to 70 dB in 5 dB steps
> * Frequency Response: +/- 1 dB from 7Hz to 25kHz
> * Noise Level: better than 74dB below +4dBu, 0-30kHz
>
>
> **A9031 Features:**
>
>
>
> * Switch for phantom power
> * 20 dB pad
> * Phase reverse switch
> * High-Impedance DI
>
>
>
Weiss A1

**Weiss A1** is a pre-amp for the 500 series, manufactured by Weiss.

## Official description

>
> The A1 is our first analog input/output only product. A state-of-the-art microphone/line pre-amplifier with a de-esser in the popular API 500 Series format. The side-chain of the de-esser uses a DSP – unique but advantageous for the precision of the side-chain and enabling the use of a very low noise gain element. Two modules can be side-chain linked for stereo operation.
>
>
> It has a transformer balanced wide level range input with a pad for line level sensitivity. The input gain is set with a sixteen position switch. A low cut filter is useful for microphone work. Phantom power can be switched on or off.
>
>
> The output is also transformer balanced and has an additional potentiometer to set the output level independently from the levels the de-esser is running at. A polar its switch allows to change the absolute polarity of the output signal.
>
>
> The de-esser section uses a bandpass filter to split the audio band. The bandpass filter parameters are the center frequency and the Q. The Threshold parameter defines the sensitivity of the de-esser side-chain. A few attack and release times and ratios can be selected via DIP switches at the bottom of the unit. A LED indicates whether there is any gain-reduction happening and a “listen” switch allows to listen to the signal filtered by the band-pass. Useful to zoom in on e.g. specific sibilances. The de-esser can be bypassed with a switch. Several LEDs allow to monitor the input and output levels.
>
>
> **Main features:**
>
>
>
> * Input, pre-amplifier
> 	+ The A1 microphone pre-amplifier stage uses a transformer-balanced, discrete, class A design with a current-feedback amplifier architecture for low distortion and wide bandwidth across the full gain range. The pre-amplifier sports very low noise for a wide range of source impedances, across the full gain range. The gain is variable in 3 dB steps between 15 and 60 dB. A 24 dB pads allows to feed line levels as well. A high pass filter can be switched in. The corner frequency can be selected to be 40 or 80 Hz.
> * De-esser
> 	+ The de-esser section uses an advanced mixed signal design: The direct signal path is fully analog while the side-chain works in the digital domain. This enables the use of a low distortion precision MDAC (Multiplying D/A Converter) as the variable gain element. The side-chain is built for very low latency, using a 500 kHz sampling frequency.
> * Front panel controls
> 	+ The front panel controls for the de-esser section are knobs for frequency, bandwidth and threshold. Further parameters (ratio, attack and release time) can be set via DIP switches.
> * Output
> 	+ The output also uses a transformer balanced design with a high maximum output level of +27 dBu. An additional output gain potentiometer allows to set the output level in a wide range.
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/657906-new-weiss-product.html
Bereich03 Audio Output

**Bereich03 Audio Output** is a gain processor for the 500 series, manufactured by Bereich03 Audio.

## History

The Bereich03 Audio Output was released in 2015.

## Official description

>
> **Output:**
>
>
> This is the perfect final stage of your analog mastering chain in front of your A/D converter.
> Very clean gain and a clear metering with over LEDs.
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/new-products-coming-soon/999755-musikmesse-2015-modular-mastering-desk-bereich03-audio.html
You Pretty Duck Filstortion

**You Pretty Duck Filstortion** is a filter and distortion module for the 500 series, manufactured by You Pretty Duck.

## History

The You Pretty Duck Filstortion was was scheduled for release in 2008. As of 2015, the module appears to not have been released.

## Official description

>
> You Pretty Duck® (You Pretty Duck) is a new music and manufacturing company based in New York City. YPD is dedicated to bringing you innovative and intuitive products of the highest artistic and build quality, with a focus on creative signal processors that will fill the gaps in existing studio gear standards.
>
>
> Filstortion™ is the first such product from You Pretty Duck, a filter and distortion generator in the standard API™ 500 series modular format for easy studio integration.
>
>
> Filstortion is just one of many planned collaborations from the design team of Eisen Audio's Jens Jungkurth (Eisen Audio, LLC: Design & Manufacturing of Pro Audio Equipment) and MMT's Noah Murphy (misomusic.net), bringing high creativity, high definition, and
> high art together to achieve an entirely new level of highness.
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/194705-500-series-module-filstortion-you-pretty-ducka.html
Chameleon Labs 581

**Chameleon Labs 581** is a pre-amp for the 500 series, manufactured by Chameleon Labs.

## History

The Chameleon Labs 581 was released in 2011.

## Official description

>
> The Chameleon Labs 581 500 Series mic preamp serves up lucidity and definition, allowing you to hear subtle details you didn't think your mics were capable of capturing. Boasting exceptional clarity and solid low end reminiscent of renowned classic designs, the Class AB 581 has an incredible sonic signature you'd expect from components costing considerably more. And this innovative design's output level control functions as a fader when routing straight to your DAW. Fortify your 500 Series rack with the Chameleon Labs 581.
>
>
> **Features:**
>
>
>
> * Exceptional clarity and solid low end reminiscent of renowned classic designs
> * Fully balanced transformer mic input which can be upgraded to a vintage style Carnhill unit
> * hi-Z Direct Input for instruments on the front panel
> * Discrete Class AB Circuit
> * API 500 series compatible card
> * Powered by CPS-501 Powered Chassis or any 500 series compatible power supply
> * Transformer balanced output
> * 300 Ohms or 1.2K Ohms mic input selector
> * 48VDC phantom power selector
> * Output level control functions as a fader when going straight to D.A.W. or tape
> * LED illuminated push buttons for visual confirmation
> * LED Metering (Power, Signal, +4dB, Peak)
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/640445-chameleon-labs-581-500-series-pre.html
Standard Audio Stretch

**Standard Audio Stretch** is a compressor/enhancer for the 500 series, manufactured by Standard Audio.

## History

The Standard Audio Stretch was released in 2013.

## Official description

>
> The Standard Audio STRETCH is an API 500 series multi-band compression unit inspired by the classic tape Noise Reduction units from the 1970s and 1980s. While Noise Reduction units were typically used for reducing tape noise, engineers and producers would often “misuse” them and modify them to create sounds unobtainable by available compressors, limiters, and equalizers.
>
>
> After analyzing many classic and vintage Noise Reduction units, the modifications performed, and the methods of use, we designed the Stretch from the ground up to enable the modern engineer/producer to easily recreate those classic techniques and take them further.
>
>
> Some Recommended Uses:
>
>
>
> * Add sparkle and air to Vocals (Lead and Background)
> * Add low punch and/or bite to Drums (Kick, Snare, Toms, Rooms)
> * Pull bite out of or add consistent sub to a bass guitar
> * Sweeten and add air to acoustic guitar and strings
> * Parallel process busses (even mix buss!) and add excitement and depth that cannot be replicated with any other available compressor or EQ combination.
>
>
> **Stretch Features**
>
>
> The input signal is split into 4 frequency bands and then each band is individually compressed with preset ratio, attack, and release settings tailored to each frequency band.
>
>
>
> * LF Band: 20Hz - 110Hz
> * MF Band: 110Hz - 3kHz
> * HF3 Band: 3kHz - 20kHz
> * HF9 Band: 9kHz - 20kHz
> * Filter/Compression pushbutton: lets the user cycle continuously through 7 different filter combinations. Orange HPF and LPF front panel LEDs indicate the different combinations.
> * 100% analog signal path
> * Highest quality, high reliability amplifier circuit design. High quality filter capacitors for filter stages.
> * Engage pushbutton: Enables/Disables true hard-wired relay bypass circuit. Unit is engaged when pushbutton LED is lit.
> * Filter/Compression pushbutton LED: Indicates when any of the active filter stages has reached 2dB of compression.
> * Input Control: Allows the user to set the gain structure through the unit so that the desired amount of compression is occurring.
> * Output Control: A post-mix circuit output level control allows the engineer to set the output level to DAW/Tape without altering the mix blend.
> * Mix Control: Blend the STRETCH signal in with the un-processed input signal to vary the amount of effect desired.
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/806779-standard-audio-stretch-2.html
AL.SO M2U

**AL.SO M2U** is a monitoring module for the 500 series, manufactured by AL.SO.

## History

The AL.SO M2U was announced in 2007, but it is unknown if it ever reached the market.

## Official description

>
> Mini central section (w/ monitoring, talkback and cue capabilities)
>
>
>
>

## External links

* Übersicht API Serie 500 – Module (German)

## References

1. ↑ 1.0 1.1 https://www.gearslutz.com/board/product-alerts-older-than-2-months/146762-al-sos-modual-500-series-compatible-modules.html
LaChapell Audio 503

**LaChapell Audio Model 503** is an equalizer for the 500 series, manufactured by LaChapell Audio.

## History

The LaChapell Audio 503 was released in 2011.

## Official description

>
> The Model 503 500 series EQLa, like its counterpart found on the 583e, offers up very low distortion signature and minimal phase deviation; it is an extremely clear and transparent EQ design. Additionally, we’ve added some capabilities to the 503 not found on the 583e, specifically: Cut/Boost range increased to +/- 12dB Low pass filter at 5k & 10k High pass filter at 50hz & 150hz +/- 6dB overall trim gain stage.
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/607906-lachapell-audio-announces-1st-nashville-product-showcase.html
A-Designs EM-Red

**A-Designs EM-Red** is a pre-amp for the 500 series, manufactured by A-Designs.

## Official description

>
> EM-Red – The EM-Red is the “mid-forward” member of the EM family. It derives its distinctive tone from a combination of an A-Designs proprietary input transformer featuring a unique winding, and a custom wound steel/nickel-wound output transformer (also a proprietary A-Designs alloy ratio). The EM-Red has the extra kick you need with a mic that lacks present midrange (such as the mid- scooped Chinese capsules), or for bringing an instrument forward in the mix. The upfront mids of the EM- Red make it ideal for drums, guitar, bass guitar, and acoustic instruments….in fact, you will find the EM- Red particularly useful when recording acoustic guitar with a condenser microphone. It’s also great for bringing out the resonance and character of rack and floor toms.
>
>
>
>
Lindell Audio RE-51

**Lindell Audio RE-51** is a pre-amp and EQ for the 500 series, manufactured by Lindell Audio.

## History

The Lindell Audio RE-51 was released in 2017.

## Official description

>
> The RE-51 is a preamp and EQ module for the 500-series built around the acclaimed OPA1731 vintage opamp.
> Usual perks such as polarity reverse and phantom power are easily switchable, but with recording workflow convenience in mind Lindell have also included stepped pots for each rotary controls to ensure ease of recall between different vocalists or sessions.
>
>
>
> * Transformer coupled mic/line input
> * Analogue VU meter
> * Transformer balanced output
> * Switched rotary controls
> * 48v phantom power
> * Switchable polarity
> * Hi-Z direct inject input
> * 80Hz switchable HPF
> * Goldplated PCB internals
> * Powered by vintage OPA1731 opamp
> * Compatible with 500 series racks
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/new-products-coming-soon/1134115-lindell-rolls-out-retro-series-modules.html
Bereich03 Audio Passive-Shelf

**Bereich03 Audio Passive-Shelf** is an EQ for the 500 series, manufactured by Bereich03 Audio.

## History

The Bereich03 Audio Passive-Shelf was released in 2015.

## Official description

>
> This is a passive EQ with two Shelving Boost bands and one cut band for high or low.
>
>
> All three bands are based on custom-made Inductors with an discret OpAmp for the gain and driving the Output Transformer. Input is also an discrete OpAmp and Output
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/new-products-coming-soon/999755-musikmesse-2015-modular-mastering-desk-bereich03-audio.html
Electrodyne 511

**Electrodyne 511** is an equalizer for the 500 series.

## History

The Electrodyne 511 was released in 2009.

## Official description

>
> **Electrodyne 511 two-band inductor EQ:**
>
>
> The Electrodyne 511 is a classic two-band discrete transistor reciprocal active inductor equalizer using 1969 / 1970 design technology. The custom inductors and output transformer are made by Electrodyne’s original maker, to strict factory manufacturing tolerances as small as 2%. This allows consistent eq performance and repeatability from channel to channel that was not possible in the 60,s. Smooth performance and eq response from minimum to maximum gain at all frequencies, provides unusually broad sonic and tonal options not experienced since the 1970,s.
>
>
>
> * Input: Active balanced discrete transistor impedance converter.
> * Output impedance: 150 ohms
> * +/-12 db gain range: Equalize or Attenuate
> * 4 frequencies selectable per band. LF: 40, 100, 250, 500hz. HF: 1.5k, 3k, 5k, 10k.
> * Peak/Shelf function on each band. Shelving at all frequencies, Peaking at 250, 500, 1.5k, 3k and 5k.
> * Distortion: 0.03%typical.
> * Maximum output: +30db at less than 0.8%thd. (+29.5db at 0.06%thd)
> * Frequency response: +/- 0.25db, 10hz to 70khz typical.
> * Signal to noise: -85db typ.
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/450802-electrodyne-500-series-press-release.html
BoZo Electronics MPA3

**BoZo Electronics MPA3** is a pre-amp for the 500 series, manufactured by BoZo Electronics.

## History

The BoZo Electronics MPA3 was released in 2010.

## Official description

>
> MPA3 - Mic Preamp
>
>
> The MPA3 is our first module in the API 500 format. It's our original design, based on the INA103, the best sounding Burr-Brown instrumentation amplifier.
>
>
> On the market there are many mic preamps in the API 500 format, but they are mostly coloured mic preamps. The job of musicians, mixing and mastering engineers is to deal with the sound. Their job is made easier by the professional audio equipment designers who design equipment that facilitates better, easier and higher quality work. The MPA3 is one of such devices.
>
>
> MPA3 is natural, musically clean, transformerless mic preamp. Our customers all agree that MPA3 is: clean, fast, flat across the entire range (without emphasis on the any individual frequency bands). It's a really transparent mic preamp.
>
>
>
> * API 500 format, single space
> * VPR alliance member since 2009.
> * Balanced design
> * 12 position rotary gain switch
> * High performance output line driver amplifier.
> * 20-64dB stepped gain rang, 4dB steps
> * 4dB Fine Gain control
> * Polarity switch
> * Precise peak meter.
> * Excellent RFI interference suppression
> * Led indicators for +48V, Polarity, HPF, and PAD
> * One year warranty on parts and labor
>
>
>

## References

1. ↑ 1.0 1.1 https://web.archive.org/web/20111231161431/http://www.bozoel.com/index.php?option=com\_content&view=article&id=57&Itemid=67
Sound Skulptor MP5.12

**Sound Skulptor MP5.12** is a pre-amp for the 500 series, manufactured by Sound Skulptor.

## History

The Sound Skulptor MP5.12 was released in 2013.

## Official description

>
> The MP 5.12 is based on one discrete Op-Amp, one Cinemag input transformer and one Cinemag output transformer.
>
>
> It delivers what is called the "LA" sound, popularised by the famous American consoles of the 70's : the punchy midrange and tight bass tone of the iron. This MP 5.12 is great on drums, electric instruments and generally all close miked sources.
>
>
> Just install it in your API\* compatible LunchboxTM rack and start recording.
>
>
> Highlights
>
>
>
> * Discrete Op-Amp (DOA) pinout compatible with the API\* 2520
> * Original Cinemag (Reichenbach) transformers on input and output
> * 70 dB of gain
> * Dual track gain potentiometer for precise gain setting, even in high gains
> * Variable output pad for those who like to drive it hot
> * Fet DI input, relay switched, the signal passes through the input transformer
> * Signal/Clip LED monitors signal with full wave rectifier
> * All low level signals switched by relays
> * Golden contacts on relays and switches
> * Nicely damped quality conductive plastic potentiometer
> * 1% metal film resistors
> * High grade 105°C low ESR electrolytic capacitors
> * High grade double sided PCB with plated holes
> * Easy build: the DOA is optionnally pre-assembled and tested
> * Available assembled or as a full kit (everything included)
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/822416-new-kit-sound-skulptor.html
Fredenstein Artistic MicPre

**Fredenstein Artistic MicPre** is a pre-amp for the 500 series, manufactured by Fredenstein.

## History

The Fredenstein Artistic MicPre was released in 2014.

## Official description

>
> The Artistic Mic Pre is a high perfomance, solid build and incredible sounding Mic-Preamp for a Bang for a Buck. It maintains all features you need on a preamp and with the own developed OPA2 amplifier and its american made steel transformer we can guarantee a professional sounding micpre even for the homerecording boys.
>
>
> A 100 KOhms high impedance direct input is located on the front-panel, it accepts balanced and unbalanced signals, the rear microphone input is automatically disconnected when a plug is inserted in the DI connector.
>
>
> The features include a maximum gain of 65 dB, a 20 dB Pad, switchable polarity, selectable input impedance, and Phantom-Power support. Our new eight LED Peak-Meter with a 50 dB range gives the user a precise reading of the operating conditions. As all Fredenstein products, the Artistic Pre is designed by a German-American team and manufactured in Taiwan.
>
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/944567-fredenstein-pro-audio-artistic-mic-pre-500-series.html
Zero Tutorial

Most of the games have a decent tutorial to let players know how the game works in general. Some of the game introduces the game mechanics by using levels. However, there are games that seems to try letting players figure out by themselves with zero tutorials.

Example1: Wurm unlimited

Wurm Unlimited is a full standalone version of the fantasy sandbox world Wurm Online, the MMORPG where the players are in charge of everything. The biggest problem is that the game doesn’t seem to have any tutorials to help the player get started the game. The fighting mechanics is extremely confusing and it might take hours to figure out what each button does.  Players need to spend a huge amount of time to figure out every function and mechanics of the game.

 Example2: LIMBO

LIMBO is a puzzle-platform video game. In the game there is no tutorial that players even do not know how to control the champion. In addition, there are lots of difficult puzzles in the game, and players need to deal these puzzles without any hint, which make players frustrated.

  Example2: Dark Souls

I have no idea what stats to boost when I level up. Look at this spreadsheet:

What? What's faith? How can players even work this out? All the NPCs say is cryptic stuff that doesn't apply to min/maxing a character's progress. So confusing.
Hacienda Labs 4000

**Hacienda Labs 4000** is a compressor and gate for the 500 series, manufactured by Hacienda Labs.

## History

The Hacienda Labs 4000 was released in 2016.

## Official description

>
> **HL 4000**
>
>
> Rediscover this compressor / gate section based on the dynamics of the mythical SSL4000E and taste the "Color" button opens up new sound dimensions to this section comp / gate / exp.
>
>
> Enjoy the "bite" of SSL specifically for trimming and freeze the rhythmic elements in your mix. Limit to extremes to pump your battery room by exemple. With the "Color" button, true pride of the brand, you can compress more naturally and keep your voices more air and harmonics in the manner of some Neve compressors. The latter acts as a variable Softknee depending on the level and the drive frequency of the side chain circuit.
>
>
> **Technical Specifications:**
>
>
>
> * Format : 500 series chassis, compatible API
> * Nominal level input / ouptut: +4dBu
> * Circuit side chain: true RMS converter designer around AD536 Analog Device
> * Compresseur :
> * Ratio : 1 to ∞
> * Threshold : +10 to -20dB
> * Release : 0.1 to 4s
> * Attack : 30ms for 20dB gain reduction
> * Fast Attack : 3ms for 20dB gain reduction
> * Gate/Expander :
> * Ratio gate : 20:1
> * Ratio Exp : 2:1
> * Threshold : -30 to +10dB
> * Range : 40dB
> * Release : 0.1 to 4s
> * Attack : linear 1ms for 40dB
> * F attack: linear 0.1ms for 40dB
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/1076453-hacienda-labs-presents-hl-169-hl-4000-500-series-modules.html
Burl Audio B1D

**Burl Audio B1D** is a pre-amp for the 500 series, manufactured by Burl Audio.

## Official description

>
> THE B1 and B1D MICROPHONE PRE AMP / DI
>
>
> Step Back – Here come the B1 and B1D… Introducing the B1 and B1D MICROPHONE PRE AMPS from BURL AUDIO. Based on the API 500 series form factor, the B1 was designed to compliment the B2 BOMBER ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX2 output transformer, the B1 MIC PRE delivers warmth with depth and clarity.
>
>
> The B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1 amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.
>
>
> The B1 and B1D come complete with both Gain and Level controls. If you want that heavy, gainy tone, crank up the stepped gain control and offset that with the level control. If clean tone is your thing, turn the gain down and crank up the level. For ribbon mics and other low impedance sources, the B1 has a transformer coupled impedance select. The B1 was rigorously tested with the popular Royer R-121 in the low impedance setting, and we think it sounds pretty f\*\*\*ing bitchin’’ on guitar amps.
>
>
> The B1 gets the best out of any microphone, whether it be dynamic, condenser or ribbon.Use the B1’s 1/4” instrument/line input on the front panel, plug in, crank up the gain and go. The PAD switch allows for hot signals and balanced line inputs through the mic XLR on the back panel. Run your tracks or mixes through the B1 for warmth and glue.
>
>
>
> * BURL custom BX3 input transformer
> * BURL custom BX2 nickel ( B1) or BX4 iron ( B1D ) output transformer
> * audiophile, discrete, class-A, direct-coupled, capacitor free circuit path
> * stepped gain control
> * independent output level control
> * 70 dB gain
> * impedance select
> * 1/4” front panel DI input
> * 30 dB pad for hot signals and balanced line level input
> * phantom power
> * phase reverse
> * tri-colored gain level indication
> * Love and Thunder!
>
>
>
Inward Connections Magnum VU

**Inward Connections Magnum VU Discrete** is a pre-amp for the 500 series, manufactured by Inward Connections.

## History

The Inward Connections Magnum VU was released in 2011. It replaced the Inward Connections MPD500.

## Official description

>
> With a warm and upfront low-end, punchy mid-range and open top end, the Inward Connections Magnum VU will bring new life to your recording rig. Classic sounding warmth, but with airiness and headroom for days. Magnum offers something different than the old standbys. Extra large tone for your lunchbox!
>
>
> **Features**
>
>
>
> * Circuitry features two VF600 all discrete amp blocks
> * LED VU meter that monitors the output level
> * +48VDC phantom power switch
> * Phase reverse switch
> * -20dB pad switch
> * Hi-Z low level line input 1/4" phone jack for guitars, keyboards and low level instruments
> * 12-position rotary trim (5dB per step), 25dB to 80dB selectable range
> * 70hz hi-pass filter
> * Output level rotary control
> * Balanced input and output transformers
> * Fits standard 500 series slot configuration, mechanically and electrically
> * Powder coating in Gunmetal color
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/570726-inward-connections-magnum-500-pre.html
Great River MP-500NV

**Great River MP-500NV** is a pre-amp for the 500 series.

## History

The Great River MP-500NV was released in 2007.

## Official description

>
> The MP-500NV is a professional quality microphone preamplifier designed to re-create the vintage sound characteristics of the early 1970s large consoles. Modern components give the MP-500NV more clarity, punch and performance under normal use. In addition, features like metering before and after the major gain stages let the user drive it 'creatively' to greatly expand the range of sonic options. Any microphone will benefit from the power of the MP-500NV preamplifier, including dynamics, condensers and ribbon types. The MP-500NV uses the same audio and metering circuitry found in the NV series preamplifiers. This unit is designed to fit into a '500' series rack using 2 available slots. It receives its power supply from the host rack. The unit is equipped with a HI-Z instrument jack that has its own input amplifier and was designed for 'DI' applications. All specifications and performance details are identical to the NV series preamplifiers with the exception of size, weight, patch jack, -10dBv Out.
>
>
> The MP-500NV has been tested and accepted into the VPR Alliance.
>
>
> **Features**
>
>
>
> * I/O connections: XLR balanced; high-Z input on front panel (disconnects mic input)
> * Adjustable gain stages: input in 5db steps to 60db; output from -25 to +10db; maximum overall gain 70db; 2 to 3 stages of single ended solid state amplifier gain blocks, depending on gain structure; high-current 70ma Class A bias on output stage
> * Input and output meters on each channel (dual-stage metering is a Great River exclusive)
> * Front panel switches: polarity; phantom power; input impedance (1200 / 300 ohm); output loading (600 ohm resistor across output transformer)
> * High quality, custom wound Sowter transformers
> * Gold plated switching contacts
> * 3 year warranty with registration
> * Mounts in 2 spaces in a '500' rack
>
>
> **Benefits**
>
>
>
> * 'Big Iron Vintage Sound' from custom-wound transformers
> * High-Z input is ideal for bass, guitar, and sound modules (FET-buffered and routed into the input transformer, a Great River exclusive)
> * Gain stage monitoring via dual meters (also a Great River exclusive)
> * Ultra quiet noise floor for outstanding performance at any gain setting
> * Powered by '500' Rack's internal power supply
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/product-alerts-older-than-2-months/118667-great-river-mp-500nv.html
AL.SO M2M

**AL.SO M2M** is a mixer for the 500 series, manufactured by AL.SO.

## History

The AL.SO M2M was announced in 2007, but it is unknown if it ever reached the market.

## Official description

>
> 8x2 mixer (w/ level control for each stereo pair)
>
>
>
>

## External links

* Übersicht API Serie 500 – Module (German)

## References

1. ↑ 1.0 1.1 https://www.gearslutz.com/board/product-alerts-older-than-2-months/146762-al-sos-modual-500-series-compatible-modules.html
Shadow Hills Industries Mono GAMA

**Shadow Hills Industries Mono GAMA** is a pre-amp for the 500 series, manufactured by Shadow Hills Industries.

## History

The Shadow Hills Industries Mono GAMA was released in 2005.

## Official description

>
> The Mono GAMA is the single-channel API 500 Series version of the Golden Age Microphone Amp, with all the capabilities, features, and quality of the original. The Shadow Hills Mono Gama is centered around our custom discrete op-amp. This no-compromise design exudes hugeness, fidelity, punchiness and depth, across the full frequency range, without becoming veiled or choked.
>
>
> The preamplifier input is transformer balanced and utilizes an original Jensen input transformer. We couldn't decide which vintage output transformer we liked best, so we had our favorites perfectly recreated, and included them all. You can change the output transformer by cranking the knob, thus changing the tonal capabilities to compliment to whatever material you are recording. This allows you to audition different settings to find the perfect match for microphone or direct input without patching and un-patching other preamps, and possibly alleviating the need for EQ. Choose between Nickel, Discrete, or Steel settings. Each transformer position is stellar unto itself, but the capability of switching between them is like having three great pre's in one.
>
>
> All the standard Mic-pre features are present: phantom power, phase reverse, a twenty dB pad, and direct input. We have also included the ability to pad and reverse the phase of the Direct Input.
>
>
> Quality is unmatched. Engraved front panels, a twenty four position swiss made attenuator for gain control, custom made knobs, and engraved serial number plates, set the build apart.
>
>
> Features:
>
>
>
> * Superb sound quality and character
> * Switchable output transformers
> * Stepped attenuator for gain control
> * Phase reversible and padable DI
> * Engraved front panels
> * 75 ma current draw per module
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/so-much-gear-so-little-time/42264-shadow-hills-mono-gama.html
Aphex A Pre 500

**Aphex A Pre 500** is a pre-amp for the 500 series.

## Official description

>
> The A PRE 500 mic pre is inspired by the popular Aphex 188 eight-channel preamp, both using a custom designed Aphex input Transformer. The A PRE 500 then adds a Jensen JT-11DL nickel output balancing transformer The A PRE 500 provides affordable access to the unmistakable 188 sound.
>
>
>
> * Front panel 10Mohm, ¼” input for the connection of instruments like guitar and bass. This input overrides the input on the rear of the receiving frame when connected.
> * A 3-way switch allows the selection of +16, +20 or +24dBu output levels.
> * The 20-segment input meter allows input levels to be easily seen, even from a distance.
> * 65 dB of gain to properly operate dynamic, condenser and ribbon microphones and a 26dB pad for very loud sources.
> * Illuminated buttons control Phantom Power, Phase Reverse and 75Hz High Pass Filter
>
>
> Applications:
>
>
> Live Performance- It’s becoming more and more common for live sound engineers to use outboard mic preamps on specific sources like lead vocals, acoustic guitars, snare drums and such. Especially for those engineers who have to use a different P.A. system every night at different venues. This allows them to keep a consistent sound for their featured instruments.
>
>
> Professional Studio Recording-The A PRE 500 has a very neutral, yet bright character. It sounds especially good on drums and percussion, B3 Organs, electric pianos, and acoustic guitars. The ¼” input makes it easy to run instruments through the mic pre without using a direct box.
>
>
>
>
Black Lion Audio B173 500

**Black Lion Audio B173 500 Mic Pre** is a pre-amp for the 500 series.

## History

The Black Lion Audio B173 500 was released in 2016.

## Official description

>
> The B173 is one of the most “bang for your buck” preamps in existence, and is now available in the 500 series format. The Black Lion Audio B173 500 not only delivers the beefy lows, buttery mids, and polished highs of a classic 1073 preamp, but does so at a fraction of the price!
>
>
> The preamp and line amp circuitry found in the B173 500 is identical to the original B173. Not a single component or design feature was compromised while converting it to a smaller package. As a result, the circuit boards are jam packed with all sorts of delicious components, including a brawny Cinemag input transformer!
>
>
> The power supply is the backbone of any preamp design, and can make a huge impact on the overall sound and performance of the preamp. The +24V rail needed to power the B173 500 is painstakingly converted from the +/- 16V rails of a 500 series rack using a custom DC-DC converter circuit specially designed to keep any unwanted noise or modulations out of the signal path. Complete isolation is then achieved through the use of inductors, ferrite beads, decoupling capacitors, power regulation, and a custom enclosure surrounding the entire circuit.
>
>
> The B173 500’s “Class A”, discrete circuitry combined with high-end components provide a fresh approach to a classic sound that won’t disappoint. Thanks for your purchase and continued support of Black Lion Audio!
>
>
> FEATURES:
>
>
>
> * 500 Series format (500 series rack required for use)
> * Cinemag Input Transformer
> * Edcor Output Transformer
> * 80 dB Gain
> * Hi-Z Input (passive, unbalanced)
> * Phantom Power
> * Phase Switch
> * Output Attenuator
>
>
>

## References

1. ↑ https://www.gearslutz.com/board/new-product-alert/1112274-black-lion-audio-releases-b173-500-mic-pre.html