I got a fun discussion for the AV-4520ci crew.
So I run all my home theater through 2 arrays of power conditioners, first my panamax M7500-pro (with buck and boost converters, and balanced power), and then cascaded off that my Furman F1500-UPS which protects my projector from power failures.
Why? Protection, sound quality, and most importantly, a way to handle energy management!
I've logged all the voltages / currents through my units and separately with a multi meter to validate their power consumptions.
In my case I keep 99% of my setup powered down to keep component run-time low and save overall energy. My conditioners physically keep the outlets off to my units, such that I'm just powering my logitech harmony 1100 charger, 3d glasses chargers, and lights on the conditioner for a total of 1.3 watts!
In the case of AVR-4520ci, running standby mode only consumes a delta 1.2 watts (2.5W total). With network mode toggled on, the delta power consumption in standby is 4 watts (6.5W Total).
With power this low, the whole unit seems to be hard isolated through a relay when in standby (apparent with the audible click over on power on).
When the unit is fully powered on, with no audio or video output, the Denon AVR-4520ci pulls a delta 146 watts (149W total)!
In my case the Home Theater gets used 2-3 times a week, for maybe 2 hour at a time, so keeping the heat output low, and energy levels down is my main concerns.
Normally a lot of people would argue about component heat uniformity ("Warm up Phase") to give predictable responses, but since the unit is already hard cut off with the relay in "stand by" we don't have to worry about this.
So the real question?
The curves of standby power and their effects on component life vs. keeping the unit hard powered off during extended non-operation. What is better?
For someone that wants to access the network features, obviously keeping the unit powered in standby with network on (only 4 watts total) is the best option. I'm actually surprised its so low! This is a great design from Denon to keep energy that low!
For someone that hardly uses their theater and wants to save additional power, I don't believe "hard cutting off" the unit through a power conditioner will degrade the AVR. Normally what is of concern is the initial transients of the system (charge up of the caps to steady state).
Since the AVR is hard isolated in standby (allowing the 1.2 watt standby) very little circuits are turned on, I believe the transients are very low (will try to hook up a scope one of these days)
In this case, I think "hard cutting off" the system wins out when we look at typical MTBFs of components in steady state vs. "non-operational life".
Anyways, just a fun discussion for the thread!