My original thought was like Gonks, I figured as long as the device was on, but not receiving a signal, the power consumption was just enough to keep the capacitors charged, but not really anything else as no amplification was occurring. Don't know how true this was and is why I was asking about the trigger when I get the 750.
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Living Room 24x18 open 1/2 flight up to a raised dining room/hall 24x12
Outlaw 976 pre-pro running 5.1 system
Outlaw 750 for Artison Masterpiece LCR and 2 NHT SuperZeros rears
Velodyne Servo FX-1200
LG OLED65C8PUA via HDMI2 to/from 976 HDMI ARC
Roku Ultra
Samsung BD-D5500 BluRay
Amazon FireStick 4K to 976 Aux HDMI input for Amazon Music Ultra