Overview
Stereo transmitter for use with Audio-Technica M3L and M3M Wireless In-ear Monitor Systems. Equipped with two XLR/¼" combo input connectors and headphone output. Includes AC adapter (country dependent), rack mount adapters, and flexible antenna.
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.
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

OVERALL SYSTEM 

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 DISCONTINUED IN NORTH AMERICA

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 

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 

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