xantech xvcd100 decora style impedance matching volume control
xantech s xvcd100 volume control is an in-wall mountable stereo speaker volume control with impedance matching capability . from one to eight pairs or stereo speakers may be driven from one stereo power amplifier using an equal number of xv volume controls . it maintains correct impedance matching between the amplifier and the speakers by the use of instant setting jumpers on the control . this eliminates the need for separate impedance matching components in multi-room installations .