The Stilo WRC DES 9v Amplifier has exceptional audio and noise cancelling qualities thanks to an extra filter switch. Power supply is either via a 9v battery or the vehicles 12v supply using the supplied cable. The WRC DES can be connected by wire to the most common car radio systems, ideal for between stages. An on-board camera can be connected directly to the intercom to record the audio track, setting the internal switch to camera high or low according to the volume of each model.