Portable 16-channel UHF wireless guitar/bass system. Miniature, lightweight transmitter plugs directly into guitar, bass (even portable keyboard) output jack. No cord connection needed. 16 user-selectable UHF frequencies for interference-free operation. Unprecedented wireless portability with single AA battery-powered receiver. 1/4-inch plug for connecting receiver directly into amp. ASC™ (Auto-Sync Channel) infrared wireless download pairs transmitter to selected receiver frequency for quick, easy setup. Up to 250ft operating range line-of-sight. Transmitter powered by single AAA battery.