Part of the XSW IEM SET in-ear personal wireless monitoring system, the Sennheiser XSW IEM SR is available here as an individual component—a compact stereo wireless transmitter used in conjunction with separately available XSW IEM EK stereo receivers. The transmitter features a half-rack, 1 RU rugged metal housing designed for extended use in small clubs. With its detachable antenna, the unit is easy to transport and can be installed in a rack (XSW rackmount kit available separately) or used standalone on a tabletop to deliver the renowned Sennheiser sound and solid wireless reliability for musicians rehearsing or performing live on a club stage or in a house of worship.
Simple-to-Use Personal Wireless Monitoring
Two combo XLR-1/4″ inputs enable you to send either a stereo or two different mono audio sources at the same time, from either 1/4″ or XLR connections.
A backlit LCD screen on the front panel allows for easy set up, even on dark stages.
You can preview your in-ear mix locally using the headphone output with volume knob located on the front.
Setting up gain, mono, or stereo options, input sensitivity, or frequency channels takes just a matter of seconds thanks to the clear and simple menu.
Reliable Wireless Performance
The stereo transmitter is equipped with 960 frequencies and has 8 banks with 12 aligned and precalculated frequencies each, enabling you to automatically find a clean wireless channel at your location for a reliable transmission up to 330′.
The system transmits in the UHF frequency range, making it immune to cell-phone and Wi-Fi interference that can plague 2.4 GHz systems.
The infrared sensors allow you to quickly sync multiple receivers to one transmitter at the press of a button.
The transmitter can send signal to as many receivers as needed.
Up to 12 transmitters can operate simultaneously in the same frequency band.
B: 572 to 596 MHz
Transmitting RF Power
Number of RF Channels
Frequency Step Size
8 Banks with 12 Aligned and Precalculated Frequencies Each
Max Transmitters per Band
Max Operating Range
330′ / 100 m (Line of Sight)
±15 kHz / ±24 kHz
BNC Socket, 50 Ohms
45 Hz to 15 kHz
L (Mono) / Right: 2 x XLR-1/4″ / 6.3 mm Jack Combo Socket, Electronically Balanced
1/4″ / 6.3 mm TRS Headphones Out with Volume Knob
Total Harmonic Distortion (THD)
≥88 dB at Nominal Load and Peak Deviation
Power Input Rating
Approximately 400 mA
32 to 104°F / 0 to 40°C
Approximately 7.9 x 5 x 1.7″ / 20.0 x 12.8 x 4.2 cm
Approximately 24.7 oz / 700 g