From the Electro-Voice RE-2 wireless microphone system, the BPU-2 bodypack transmitter is designed for use with compatible lavalier and head worn microphones as well as compatible instrument cables. The transmitter is versatile and rugged featuring a durable metal construction. The microphone input is a standard TA4F (female) connection allowing connection to all EV microphones featuring a TAFM (male) output.The transmitters input level is adjustable allowing input from microphones and instruments. Dual Compander technology processes high and low frequency signal separately providing exceptional sound quality for guitars and other instruments or line level signals. The BPU-2 features a unique "smart" battery which renders it impossible to put the battery in wrong, enabling quick changes on stage.