Designed by Jos van Eijndhoven, the module consists of 2 PCBs, and comes fully stuffed and tested. It is intended for either upgrade of existing equipment, or building new. Impedance 47k-ohm. Volume can be set in 64 steps of exactly 1.0dB. Additionally, 4 inputs can be chosen, all controlled by a single knob or Philips / Marantz and Sony remote controls. Passive design, hence long cables and low impedance power amplifiers cannot be driven. Available colors are blue, red and yellow, please specify at web-order.