XS Wireless IEM is Sennheiser’s entry UHF in-ear monitoring system, with auto scan, one-button sync to the bodypack and a half-rack metal transmitter. This set ships as a complete in-ear monitoring system with rack-mount transmitter, bodypack receiver, earphones and accessories. Band variant: Band E, 823 – 832 MHz and 863 – 865 MHz. Operation within 863 – 865 MHz is licence-exempt in the UK; 823 – 832 MHz requires a coordinated licence.
Key Features
✓Analogue UHF in-ear monitoring system
✓1440 tunable frequencies across the selected UHF band
✓Auto-scan with one-button sync from transmitter to bodypack
✓Metal half-rack rackmount transmitter and plastic bodypack receiver
✓IE 4 earphones supplied with the full set
✓UK band Band E: 823 – 832 MHz and 863 – 865 MHz
✓Switching bandwidth: up to 24 MHz
✓Audio frequency response: 45 Hz to 15 kHz
✓Battery runtime: Approx. 6 hrs (depending on volume level)
Specifications
| XSW IEM SR – Stereo Transmitter | RF characteristics |
| XSW IEM SR – Stereo Transmitter: B | 572 – 596 MHz (30 mW) |
| XSW IEM SR – Stereo Transmitter: C | 662 – 686 MHz (30 mW) |
| XSW IEM SR – Stereo Transmitter: E | 823.2 – 831.8 MHz (30 mW) |
| XSW IEM SR – Stereo Transmitter: K | 925.2 – 937.3 MHz (10 mW) |
| XSW IEM SR – Stereo Transmitter: Switching bandwidth | up to 24 MHz |
| XSW IEM SR – Stereo Transmitter: Nominal/peak deviation | ¬±15 kHz / ¬±24 kHz |
| XSW IEM SR – Stereo Transmitter: Antenna output | BNC socket, 50 Ω |
| XSW IEM SR – Stereo Transmitter: AF input BAL AF IN L (I) + MONO/ BAL AF IN R (II) | 2x XLR-3/¼” (6.3 mm) jack combo socket, electronically balanced |
| XSW IEM SR – Stereo Transmitter: Total harmonic distortion (THD) | <0.9 % |
| XSW IEM SR – Stereo Transmitter: Signal-to-noise ratio (at nominal load and peak deviation) | ≥88 dB |
| XSW IEM SR – Stereo Transmitter: Input rating | +12 V DC |
| XSW IEM SR – Stereo Transmitter: Current consumption | Approx. 400mA (depending on volume level) |
| XSW IEM SR – Stereo Transmitter: Dimensions | Approx. 200 x 128 x 42 mm |
| XSW IEM SR – Stereo Transmitter: Weight | Approx. 700 g |
| XSW IEM EK – Stereo Receiver | RF characteristics |
| XSW IEM EK – Stereo Receiver: B | 572 – 596 MHz |
| XSW IEM EK – Stereo Receiver: C | 662 – 686 MHz |
| XSW IEM EK – Stereo Receiver: E | 823.2 – 831.8 MHz |
| XSW IEM EK – Stereo Receiver: K | 925.2 – 937.3 MHz |
| XSW IEM EK – Stereo Receiver: Switching bandwidth | up to 24 MHz |
| XSW IEM EK – Stereo Receiver: Nominal/peak deviation | ¬±15 kHz / ¬±24 kHz |
| XSW IEM EK – Stereo Receiver: Squelch | 10 µV, fixed |
| XSW IEM EK – Stereo Receiver: Total harmonic distortion (THD) | <= 1 % |
| XSW IEM EK – Stereo Receiver: AF output level at 3.5 mm | 2 x 1,25 Veff at 16 Ω |
| XSW IEM EK – Stereo Receiver: High Boost (EQ) | +10 dB at 13 kHz |
| XSW IEM EK – Stereo Receiver: Limiter | -10 dB |
| XSW IEM EK – Stereo Receiver: AF frequency response | 45 Hz to 15 kHz |
| Sennheiser part number | 509149 |
| UK band | Band E (823 – 832 MHz and 863 – 865 MHz) |











