D-TAR Wave-Length Pickup System Unitary full length pickup accommodates virtually all 6-string spacings Thin cable design easy installs in guitars with either 1/8" or 3/32" saddles, often with no modification to the saddle slot.High Headroom allows for twice the dynamic range of a 9-volt system. Uses two "AA" batteries Dual Source Capability allows the user to combine the wave-length with a magnetic pickup or soundboard transducer for greater complexity of signalAdjustable bass and treble trim controls