JK Audio combines professional audio electronics in a rugged new belt pack design. RemoteAmp Two provides a listen only connection for mono IFB or full bandwidth stereo music listening. Separate volume controls for the XLR and 3.5 mm line input jacks allow a simple mix of mono and stereo sources. The XLR line level input accepts either a balanced mono signal, or a party line intercom feed (listen-only). The 1/2 watt, 1/4" stereo headphone jack will cut through any crowd noise....