The 16×1, Sixteen input, Single Output Stereo Switcher/Router passively switches or routes any one of 16 stereo inputs to one stereo output or vise-versa through gold contact relays. The passive nature of the switching allows for any input level and impedance to be used. Inputs may be balanced or unbalanced, while output levels, impedance, distortion, noise and balancing will match that of the selected input. The 16 x 1 has features to allow selecting which of any source is active at power-up; last source selected; audio mute; an enable switch; an audio activity monitor w/remote status; a step input, providing a means of stepping though each source, while source number one is configured to route audio to the output in the case of loss of power to the unit. In addition to their normal use with audio signals, the 16×1 can also be used to switch digital signals and telephone lines. Control via front panel switches, contact closures, 5-volt TTL/CMOS logic, open collector and/or multi-drop serial port. Removable screw terminals are provided for all audio connections.