The Sonos Amp goes into ‘idle’ mode when it doesn’t detect an audio signal for more than 3 minutes.
It’s a shame that the Amp doesn’t automatically wake up from idle mode when the TV it’s connected to is turned on. Every time you switch the TV on, and begin playing content, you miss the first 3 seconds of audio as you wait for the Amp to wake up.
This problem also occurs when you pause whatever content you’re watching for more than 3 minutes - the Amp goes to idle mode, and then you miss the first 3 seconds of audio when you begin playing again.
Every other audio receiver turns itself on when the TV is turned on, using HDMI CEC control. Surely the Amp could do the same? The Amp should wake up from idle when the TV is turned on, and stay woken up until the TV is turned off.