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Wireless In-Ear Monitor Systems Brochure (M2 & M3)
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M3 Wireless In-Ear Monitor System Manual
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M3 Wireless In-Ear Monitor System

Audio-Technica’s advanced M3 IEM system offers a full range of professional in-ear monitoring features, with a choice of 1321 UHF channels and easy-to-read LCD information displays on both transmitter and receiver for setting preferences. The stereo monitor system is equipped with Audio-Technica’s versatile Personal Mix Control, which gives allows volume and mix control of two independent signals on stage, via controls on the M3R stereo body-pack receiver. While up to 16 complete M3 systems may be used simultaneously, any number of M3R stereo receivers can operate on the same frequency with a single M3T stereo transmitter. The M3T Stereo Transmitter is equipped with two XLR/¼” combo input connectors into which users can connect line-level inputs (from a mixing console, for example). The M3T also offers a headphone output that allows you to monitor transmitter input signals directly.

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 an ear-conforming foam tip

Selectable auxiliary input offers connection point for ambient microphone, click track, or other mic- or line-level input

M3 Components
EP3 Headphones
In-ear dynamic headphones offer high-fidelity sound and excellent isolation
M3T Stereo Transmitter
Wireless UHF transmitter (frequency-agile) offers LCD display and 1321 user-selectable frequencies
M3R Stereo Receiver
Personal Mix Control in a lightweight body-pack with backlit LCD display

Compare the M2 & M3 Wireless In-Ear Monitor Systems.

Why choose in-ear monitors?

OVERALL SYSTEM SPECIFICATIONS
Operating Frequencies	Band E: 790.000 to 822.000 MHz, 1281 frequencies Band F: 832.000 to 865.000 MHz, 1282 frequencies Band L: 575.000 to 608.000 MHz, 1321 frequencies Band M: 614.000 to 647.000 MHz, 1321 frequencies Not all frequency bands available in all areas. Please check with local regulations.
Minimum Frequency Step	25 kHz
Modulation Mode	FM stereo
Maximum Deviation	±40 kHz
Dynamic Range	90 dB (typical), A-weighted
Total Harmonic Distortion	<1% at (1 kHz, ±20 kHz Deviation)
Operating Range	100 m (300'), typical (Open range environment with no interfering signals.)
Operating Temperature Range	-5° C (23° F) to +50° C (122° F) (Battery performance may be reduced at very low temperatures.)
Frequency Response	60 Hz to 13 kHz (+/- 3 dB)
Simultaneous Use	16 channels per band (maximum recommended) For assistance with multi-band operation or other frequency coordination issues, please contact you regional Audio-Technica customer service representative.

RECEIVER SPECIFICATIONS
Receiving System	Double conversion superheterodyne
RF Sensitivity	20 dBuV (at 60 dB S/N ratio, 50 ohms termination)
Headphone Output Connector	3.5 mm TRS stereo phone jack
Headphone Output Power	65 mW (at 32 ohms)
Antenna Input	SMA-type, 50 ohms
Aux Input Connector	3.5 mm TRS stereo phone jack
Batteries	2 x 1.5V AA (not included)
Battery Life	8 hours (alkaline) Depending on battery type and use pattern
Dimensions	70.0 mm (2.76") W x 25.0 mm (0.98") D x 110.0 mm (4.33") H
Net Weight	133 g (4.7 oz), without batteries
Accessories Included	EP3 earphone; flexible antenna

TRANSMITTER SPECIFICATIONS
RF Power Output	10 mW/50 mW (switchable), 50 ohms Limited to 10 mW within 863 MHz to 865 MHz Following national regulations
Spurious Emissions	Following federal and national regulations
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
Maximum Input Level	XLRF-type/6.3 mm stereo, (1/4") balanced: +26 dBu 6.3 mm (1/4") mono, unbalanced: +26 dBu
Loop Output Connector	XLRM-type connector Pin 1: Ground Pin 2: Hot Pin 3: Cold
Power Requirement	12-18V DC, 600 mA
Headphone Output Connector	6.3 mm (1/4") TRS stereo phone jack
Headphone Output Power	120 mW at 32 ohms
Antenna Connector	BNC, 50 ohms
Dimensions	210.0 mm (8.30") W x 132.0 mm (5.20") D x 44.0 mm (1.70") H
Net Weight	930 g (32.8 oz), without accessories
Accessories Included	AC adapter (country dependant); rack mount adapters; flexible antenna