Audio-Technica In- Ear Audio Monitor System (M3M) The Audio-Technica M3 Wireless In-Ear Monitoring System (Band M 614.000 - 647.000MHz) offers stage performers and musicians the freedom of wireless, personalized monitoring without speaker wedges. The system features the M3T transmitter, M32R personal receiver and EP3 in-ear dynamic headphones. Talent can create their own personal monitoring mixes using the intuitive controls on the M3R. The M3T transmitter features XLR & 1/4" phone combi-connector inputs and XLR loop-through outputs to feed an audio console. There are 1321 selectable frequencies and up to 16 systems can operate simultaneously on each band. An easy to read graphic LED display on the transmitter provides all necessary information and defeatable limiter eliminates sudden peaks in audio signal. Features: High-fidelity sound with clean, articulate mix allows performers to hear themselves clearly at lower volume 1321 selectable UHF channels with automatic frequency scanning Up to 16 simultaneous systems per frequency band Three receiver modes: Personal Mix, stereo and mono Personal Mix Control allows volume and mix control of two independent signals at the receiver LCD information display offers step-through menus for setting preferences XLR loop output (true pass-through) connects signal to mixing console, additional IEM system or recording device with no signal degradation Adjustable squelch eliminates annoying static Pilot tone protects against RF interference when transmitter is turned off Multi-level limiter (defeatable) helps protect hearing from sudden peaks Portable system is quick to load and set up Reduces on-stage audio clutter for better overall mix & less feedback Use any number of Stereo Receivers (with individual mixes) on the same frequency Audio-Technica earphones with proprietary dynamic drivers offer full frequency response and outstanding isolation Personal fit with 3 sizes of rubber eartips plus ear-conforming foam tips Selectable auxiliary input offers connection point for ambient microphone, click track, or other mic- or line-level input Specifications: Operating Frequencies: Band M: 614.000 to 647.000 MHz, 1321 frequencies Minimum Frequency Step: 25 kHz Modulation Mode: FM stereo Maximum Deviation: +/-40 kHz Dynamic Range: 90 dB (typical), A-weighted Total Harmonic Distortion: &lt;1% at (1 kHz, +/-20 kHz Deviation) Operating Range: 100 m (300'), typical Operating Temperature Range: -5deg. C (23deg. F) to +50deg. C (122deg. F) Frequency Response: 60 Hz to 13 kHz (+/- 3 dB) Simultaneous Use: 16 channels per band (maximum recommended) Receiver: System: Double conversion superheterodyne Receiver: RF Sensitivity: 20 dBuV (at 60 dB S/N ratio, 50 ohms termination) Receiver: Headphone Output Connector: 3.5 mm TRS stereo phone jack Receiver: Headphone Output Power: 65 mW (at 32 ohms) Receiver: Antenna Input: SMA-type, 50 ohms Receiver: Aux Input Connector: 3.5 mm TRS stereo phone jack Receiver: Batteries: 2 x 1.5V AA (not included) Receiver: Battery Life: 8 hours (alkaline) Transmitter: RF Power Output: 10 mW/50 mW (switchable), 50 ohms, Limited to 10 mW within 863 MHz to 865 MHz Transmitter: Spurious Emissions: Following federal and national regulations Transmitter: Input Connections: XLRF-type/6.3 mm stereo (1/4") combination connector, Pin 1 and Sleeve: Ground, Pin 2 and Tip: Hot, Pin 3 and Ring: Cold Transmitter: Maximum Input Level: XLRF-type/6.3 mm stereo, (1/4") balanced: +26 dBu Transmitter: Loop Output Connector: XLRM-type connector, Pin 1: Ground, Pin 2: Hot, Pin 3: Cold Transmitter: Power Requirement: 12-18V DC, 600 mA Transmitter: Headphone Output Connector: 6.3 mm (1/4") TRS stereo phone jack Transmitter: Headphone Output Power: 120 mW at 32 ohms Transmitter: Antenna Connector: BNC, 50 ohms Dimensions (WxDxH) Receiver: 70x25x110mm / 2.75x0.98x4.33", Transmitter: 210x132x44mm / 8.26x5.19x1.73" Weight: Receiver: 133 g (4.7 oz) without batteries, Transmitter: 930 g (32.8 oz) without accessories