Here's whatSennheiser say... The Sennheiser XSW 1-CL1-E Instrument Set provides a solid wireless broadcast with up to 10 compatible channels in a stable UHF band within a large bandwidth. This is an all-in-one wireless system designed to be used for guitarists and bassists as it transmits a high quality powerful sound and an outstanding sound reproduction thanks to a robust and rugged instrument cable. All of these wireless sets come with a stationary receiver that enables a quick setup and ease of handling. The set is completed with a compact bodypack transmitter, a power supply and two AA batteries so you can get started immediately. With integrated antennas and an antenna-switching diversity reception, this wireless instruments set offers automatic frequency management and synchronisation via a remote channel. The XSW 1-CL1-E Instrument Set features a frequency range in E (821-832 MHz, 863-865 MHz). Features Compact bodypack transmitter, rugged instrument cable Antenna-switching diversity reception Integrated antennas Automatic frequency management and synchronization via remote channel for easy setup Selectable UHF frequencies within a large bandwidth Up to 10 compatible channels Specification Receiver Dimensions: approx. 200 x 42 x 127 mm Bodypack transmitter Dimensions: approx. 71 x 96 x 28 mm THD, total harmonic distortion: 0.9% Weight approx. 340g (receiver), approx. 95g (transmitter) Signal-to-noise ratio: 103 dBA RF output power: 10 mW Switching bandwidth: up to 24 MHz Operating time approx. 10 hrs Modulation: Wideband FM Power supply - Receiver: 12 V DC nom. / 300 mA Transmitter: 2 AA size batteries, 1.5 V Output voltage: 1/4 (6.3 mm) jack socket (unbalanced): +6 dBu, XLR socket (balanced): +12 dBu Housing: Rugged ABS housing Frequency: 8 frequency banks, each with up to 10 factory-preset channels Frequency range: A: 548-572 MHz, GB: 606-630 MHz B: 614-638 MHz C: 766-790 MHz D: 794-806 MHz E: 821-832 MHz, 863-865 MHz K: 925-937.5 MHz Sensitivity: < 3 V at 52 dB(A)rms S/N SPL for peak deviation: 130 dB Squelch: adjustable from 3 dBV to 28 dBV (combined with pilot tone) Synchronization: 2.4 GHz, Low Power OQPSK (only active during synchronization) Input sensitivity: 1.5 mV / Pa AF frequency response Receiver: 50 to 16,000 Hz (3 dB) Adjustment Range Transmitter: 0 to -30 dB, adjustable in 10 dB steps Audio adjustment range: 45 dB, adjustable in 5-dB steps Line / Mic level: 20 dB, switchable Temperature Range operation: 0C to +40C, storage: 20C to +70C Receiver Principle: double superheterodyne Diversity principle: Antenna switching diversity via internal antennas What's in the Box 1 receiver EM-XSW 1 1 bodypack transmitter SK-XSW 1 instrument cable Cl1 1 power supply NT 12-5 CW 2 AA batteries