:hun: If you turn the Ignition Switch to OFF, the Radio WILL go off - completely!! If you hit the volume button twice, it WILL shut off the speakers - completely!! So the radio isn't truly turned off, altho for all reasonably foreseeable intents & purposes, it is! Effectively, it's just like every one of those other devices you have around the place that you leave with a 'standy-by' glowing - it's sorta vaguely technically OFF; but in reality, it's got some power & is still ready to work at a moments notice!
That's very helpful. Figuring out the sound system I have had on my to-do list for some time but it wasn't a high enough priority. This inspires me to tackle it (the whole integrated gps/music/intercom thing).