The SS 4.4 provides matrix audio switching of four stereo inputs to 4 stereo outputs.  Matrix switching allows any/or all inputs to be assigned to any/or all outputs.  The SS 4.4 may be controlled via front panel switches, contact closures and/or the multi-drop RS-232 serial port.  Additional features include stereo silence sensor with SPDT relay, front panel stereo LED VU meters, stereo headphone jack with level control, powered monitor level control all with output selection switching, 16 Trigger(PIP)inputs, four GPO- open collectors and four SPDT relays.  Installation is simplified with pluggable euroblock screw terminals.  The SS 4.4 is supplied in a 1-RU chassis.

• Separate input selection push buttons are provided for
  each output channel.
• Three switching modes; Interlock, overlap and mix.
• Internal silence sensor monitors output one and is
  equipped with a front panel LED indicator; SPDT alarm
  relay and adjustable SS alarm delay and restore timing
  duration.
• Stereo LED VU meters with front panel output selection
  switch.
• Stereo headphone amplifier with front panel output
  selection switch, headphone jack and level control.
• Stereo powered monitor output with front panel output
  selection switch and level control.
• Power-up selection of inputs to outputs, mute or last
  source selected.
• Most configuration options via rear panel dipswitches.
• 16 input “PIP” (GPI / Triggers) port (or remote control)
  with front panel LED indicator.
• Four open collector status outputs or programmable via
  burst commands.
• Four SPDT relays with selectable multiplex function on
  inputs assigned to output two.
• Multi-turn input and output level controls.
• Electronically balanced stereo inputs and outputs with
  low noise and distortion circuitry.
• Multi-drop RS-232 serial port (USB and/or Ethernet
  optional) with power and data activity LED.
• Multiple units may be cascaded to expand inputs.
• Plug-in euroblock screw terminals for ALL audio I/O and
  remote control connections.
• 1-RU aluminum enclosure.
• Universal switching power supply.