Radial JPC 2-channel Active Laptop Direct Box The Radial JPC is a stereo direct box that has been specifically designed for use with computer sound cards and other consumer electronic products to allow these to be connected to a professional sound system. It is unique in that it combines the advantages of transformer-isolated inputs with an active drive circuit, giving you the 'best of both worlds' in a compact and extremely flexible package. Transformer coupled inputs have the unique advantage of isolating the 'source' from the ' The JPC features two active 48V phantom powered channels in a compact, rugged enclosure It combines an active drive circuit, for long cable runs, with transformer isolated inputs to eliminate hum and buzz caused by ground loops Multiple input and thru connectors for great versatility include 1/8" stereo, 1/4" stereo and RCA In depth: The Radial JPC is a stereo direct box that has been specifically designed for use with computer sound cards and other consumer electronic products to allow these to be connected to a professional sound system