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 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 ear-conforming foam tips


• 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