Why would you need a switcher? The sub would be hooked up all the time. It goes off by itself after no signal for about 15 minutes.Sorry I didn't make it clear, the switcher is for the subwoofer to select input from either the DAC1/LOC or Marantz AV7005 sub out.
https://www.markertek.com/product/arx-rs-1/arx-rs-1-remote-switcher-stereo-xlr-balanced-remote-contr...