The Sennheiser EW 100 G4-CI1-A is a professional UHF wireless system specifically configured as an instrument set, operating within the 516 to 558 MHz frequency range. This set is designed to provide reliable, high-fidelity wireless freedom for electric guitarists, bassists, and other instrumentalists performing on stage. The system comprises a rack-mountable single-channel diversity receiver and a rugged bodypack transmitter equipped with a standard 1/4-inch instrument jack input. This configuration allows musicians to plug their instrument cable directly into the bodypack, which then transmits the signal wirelessly to the receiver at the front-of-house position, eliminating the need for a long cable that can restrict movement and present a tripping hazard.

The receiver utilizes true diversity reception with two antennas to combat signal dropouts and interference, automatically selecting the strongest RF signal to ensure a stable audio link. It features a clear LCD screen for monitoring frequency, RF and audio levels, and battery status, along with an integrated frequency scanner to quickly find and sync to an open channel within the legal frequency band. The bodypack transmitter is built to withstand the rigors of live performance, with a robust metal casing, a secure belt clip, and intuitive controls for power, frequency selection, and gain adjustment. Its locking 1/4-inch input jack prevents accidental disconnection during energetic performances.

Designed for seamless integration into professional audio setups, the receiver provides both balanced XLR and unbalanced 1/4-inch outputs to connect directly to a guitar amplifier input, a pedalboard, or the stage box of a mixing console. The system employs Sennheiser's refined G4 technology, which offers improved frequency response, lower latency, and enhanced companding for transparent sound that faithfully preserves the tonal character of the instrument. For touring musicians, worship bands, and theater productions seeking a dependable, great-sounding wireless solution for electric instruments, the EW 100 G4-CI1-A instrument set offers a proven and professional-grade tool to enhance stage performance.