The BLX14 Bodypack Wireless System for Guitar or Bass from Shure includes a BLX1 bodypack transmitter, a BLX4 single-channel receiver, and a WA302 1/4" TS to TA4F instrument cable. It is designed for use with guitar, bass, or any instrument with a 1/4" output. The system is set up for Shure's M15 frequency band and operates from 662 to 686 MHz. 

The BLX4 receiver has a front-panel dual-color LED status indicator that glows green for normal levels and red when clipping for fast metering. It has both XLR and 1/4" outputs for connecting to an amplifier or mixing board. The BLX1 transmitter is powered by two included AA batteries and can run for up to 14 hours. The system has a 300' line of sight range of operation.