- For Unbalanced, Line Level Sources such as AM/FM tuners, casette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers. - Use For Adjacent Sources (less than 15 feet from the hos unit) - Responds To Mute Bus Activation, via Mute SEND module or switch-closure. - Responds To Both Mute Bus #1 And Mute Bus #2 By Default (cut jumper(s) to disconnect individual mute bus). - Adjustable Mute Depth Provides Ducking Rather Than Full Muting. - Connector: removable terminal block.