INTEGRATED STEREO AMPLIFIER● AAVA volume control ● Power amplification stage with bipolar transistors indouble parallel push-pull configuration ● Rated for 180 watts into 4 ohms and120 watts into 8 ohms ● High damping factor of 500 ● Power amplification
stage configured as instrumentation amplifier ● Current feedback amplification
topology in power amplification stage ● Logic-control relays for shortest
signal paths ● Strong power supply with massive high-efficiency transformer
and large filtering capacitors ● Protection circuitry using MOS-FET switches

Integrated Amplifier With More Output Power and Further Evolved Performance
The E-380 realizes a 20% increase in rated output power thanks to a reinforced power
amplification stage and power supply. The further evolved AAVA volume control systemallows music enjoyment at any level without even the slightest degradation of signal quality.
The power amplifier section utilizes the instrumentation amplifier principle to achieve
outstanding S/N ratio. Low impedance design of the output circuitry results in a damping
factor of 500, ensuring that the potential of every speaker can be brought out to the fullest.
Enjoy a musical performance of amazing transparency and dynamism.

Innovation ‒ At the leading edge of technology■ How AAVA works

OutputOutput of 16 V-I
converter amplifiers is
combined for volumecontrol action

0.5

0.4

Current ratio■ AAVA volume control
AAVA is a revolutionary type of volume control that completely doesaway with any variable resistors in the signal path, using instead a
combination of 16 V-I converter amplifiers with different gain. Unlike
in conventional volume controls, the music signal is not being
attenuated by a rotary resistor, so that optimum S/N ratio and low
distortion can be maintained over the entire volume range. The
signal degradation and impedance changes of older designs are now
a thing of the past. The E-380 uses four maximum-gain V-I converter
amplifiers, followed by two amplifier circuits in parallel configuration,
which doubles the total output current capability and halves thecircuit impedance to further reduce noise.

0.3

0.2

0.1

■ AAVA volume control assembly that minimizes noise

V-I converter amplifiers
enable finely gradedcontrol

0【AAVA features】
Purely analog principle avoids the inherent noise of digital circuitry●Excellent S/N ratio at any volume level position●No change in sound quality over the entire range●

Finely graded volume adjustment steps●No volume differences between left and right channel●High channel separation●

Left/right balance adjustment and attenuation also realized with AAVA

16 types ofV-I converter amplifiers

1−
1−
1−
1−
1−
1−1−1−
1−
1−
1−
1−1−
1−1−
1−

●

2122

223

32425

426 7
Music signal is5
2 862 9converted into 16 types
72 1082 11of weighted currents
92 12Input

1011212213 142 152 161421315

Sound quality ‒ Simply aiming for the best
■ Power amplification stage with bipolar transistors
The power amplification stage features bipolar transistors in a
double parallel push-pull configuration.
■ 25% improved damping factor
Balanced Remote Sensing and MOS-FET switches result in adamping factor of 500, representing a 25% improvement over thepredecessor model.

Bipolar powertransistors■ Power supply circuitry designed for optimum stabilityThe large transformer and massive 33,000 μF filtering capacitorswith 10% more capacitance provide rock-stable high-quality power.
■ 20% more rated output power
Two power amplifier units for left and right mounted directly to large heat sinks
deliver ample power, rated for 120 watts into 8 ohms or 180 watts into 4 ohms.
200
290200Massive transformer

Output power (W)

150

100

180
130
120

50Max. output power
Rated output power84

Impedance (Ohms)

Large filtering capacitors

Output power characteristics

Power amplifier assembly

16Minimum value forcontrol current is
1/65,536

Advanced features■ Logic-control signal switching relays for shortest
signal paths■ Five line level and two balanced inputs■ Line input and output connectors for a recorder■ Individual phase setting for each input■ Stereo signal can be switched to monophonicoperation■ Left/right balance control also realized with AAVA
■ Convenient attenuator is useful for example when
operating an analog record player■ Loudness compensator enhances low end presence■ Tone controls using summing active filters■ Power amplification stage employs instrumentation
amplifier principle■ Current feedback amplification circuit topology
assures excellent phase characteristics in high range■ Speaker output protection circuit guards against
short-circuiting■ Protection circuitry using MOS-FET switches■ Two sets of large speaker terminals■ Preamplifier and power amplifier sections can beused separately■ Preamplifier outputs also support bi-amping connection■ Power amplifier inputs allow use of that section only
■ Dedicated headphone amplifier designed foroptimum sound quality■ Two rear panel expansion slots allow use of option
boards■ DAC input selector button for use when digital
input board (DAC-40 or DAC-50) is installed■ Numeric indication of digital signal sampling
frequency (when DAC-40 or DAC-50 is installed)■ High-sensitivity
analog peak
power meters■ Supplied Remote Commander
RC-230Allows volume adjustment,input source switching etc.

❶❷

❶ Speaker output selector❷ Bass control❸ Treble control❹ Tone control on / off button❺ Phase selector button❸❹❺❽❾❻❿❻ Mono / stereo selector button❼ Loudness compensator on / off button❽ DAC input selector button❾ MC / MM selector button❿ Display mode selector buttonLine input and output connectors

Protection circuitry withMOS-FET switches❼

MOS-FET switches⓫⓬⓭⓫ Balance control⓬ Preamplifier / power amplifier

separator switch⓭ Recorder selector

Balanced input connectors

Speaker terminals with thick,short connecting shafts and protection circuitryBi-amping for further enhanced soundOption Boards

In a bi-amped setup, the speaker units for the LOW frequency
range and the HIGH frequency range are driven by separate
amplifiers with equal gain, which enables playback with
Left speaker
Right speakereven higher sound quality.

Rear panel expansion slots allow use of
three types of option boards (DAC-50,AD-50, LINE-10). Up to two boards canbe inserted, according to requirements.

＊The speakers must have abuilt-in crossover networkand separate inputs for
the LOW and HIGH range.

■ The following option＊The example shows asetup with an additional
power amplifier for the low
frequency range.

＋ ○− ○− ○＋○HIGH

LOW− ○＋ ○− ○＋○

HIGH

LOW

DAC-50AD-50

Photo shows an option board installation example.
LEFT

DAC-10/DAC-20/
DAC-30/DAC-40

Analog Disc
Input Board

AD-9/AD-10/
AD-20/AD-30

Line Input
Board

LINE-9

Coaxial digital cable
LEFT

RIGHT

Optical fiber cable− ＋ − ＋USB cable

To INPUT

CD player

PC

DAC-50Power amplifier

Powermeters

Remotesensor

Level / frequency
display

Power switch Speaker
output selector

Balancecontrol

Bass control
Treble control
Tone control on / off button

Preamplifier / power amplifier
separator switch

Phase selector button
DAC input selector button
MC / MM selector button

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Output Impedance
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AD-50

Line Input Board LINE-10

Input

Signal Sampling frequencies Number of bits
2.8 MHz
5.6 MHz11.2 MHz
DSD
1-bit
USB
11.2 MHz:ASIO only
PCM 32 to 384 kHz 32-bit
OPTICAL PCM 32 to 96 kHz
24-bitCOAXIAL PCM 32 to 192 kHz 24-bit

Provides anadditionalset of unbalanced line
level inputs.

LINE-10

Rear Panel
Function
display

RecorderButton for
selector opening sub panel

Volumecontrol

Line input connectors
Recorder input / output Preamplifier output Power amplifier input
TUNER / CD / LINE 1, 2, 3 connectors REC / PLAY connectors PRE OUT connectors MAIN IN

Headphonejack

Option board
Balanced input
AC power
installation slots connectors CD-BAL / BAL supply connector
Pin ② (‒), Pin ③ (+)
Speaker terminals A / B (2 sets)* Can be changed withphase selector button
on front panel
Max. 16 mm
Supported Spade(0.63 )lug dimensions

Attenuatoron / off button

Loudness compensator on / off button
Display mode selector button
Mono / stereo selector button

Guaranteed Specifications
Continuous Average
Output Power௅+]Input
Impedance

MCMM
66 dB
40 dB
30 ohms
100 ohms 47 kilohms
300 ohms

High-performance DAC with two
AK4490EQ chips from Asahi Kasei
Microdevices driven in parallel.

Front PanelInput
selector

Cartridge
Gain

DAC-50Digital component

From PRE OUT● Subsonic filter

Digital Input
Board

Connection example

Analogoutputs● Supports MC and MM cartridges● Load impedance selector button (for MC only)

Digital Input Board− ＋ − ＋

AD-50

Features a high-performance phonoequalizer for playback of analog records.

boards can also be used:

RIGHT

E-380

Analog Disc Input Board

8-ohm load

120 W

4-ohm load

180 W

4 to 16 ohm load

0.05%

0.01%
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Min. 7 mm (0.28 )[Guaranteed specifications are measured according to EIA standard RS-490.]

Tone Controls/RXGQHVV&RPSHQVDWRU
Attenuator

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Input

615DWLR

Power Meters
2XWSXW/RDG
Impedance
6WHUHR+HDGSKRQHVPower Requirements
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292 W

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MassIn shipping cartonNJ OEVRemarks★ This product is available in versions for 120/220/230 V AC. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
★ The 230 V version has an Eco Mode that switches power off after 120 minutes of inactivity.
★ The shape of the plug of the supplied AC power cord depends on the voltage rating and destination country.

Supplied accessories● AC power cord
● Remote Commander RC-230●The specifications and appearance of this product are subject to change without notice.
K1905Y PRINTED IN JAPAN 850-2216-00（B1）