The Passive cable for high output active pickups and line outputs from keyboards and other audio equipment for all Lectrosonics transmitters with 5-pin input jacks. Start with the input gain control knob on the transmitter between 10 and 11’o clock for typical guitar pickups. Play at the same level that will be used during the performance and fine adjust the gain control knob so the -20 LED flickers red (indicating +0dB) during the loudest passages.