Hey mapman,
I have 20 amp dedicated circuits and have no problems tripping the circuit breaker turning on any amplifier. I never turn off the #16 and it draws around 230 watts and runs cool for a Class A design. So, I would not call the #16 a "green" design, but not expensive to run. Also you can put it into standby to conserve more energy, it only takes a few minutes to come up to speed because the standby mode keeps the caps charged.
I have 20 amp dedicated circuits and have no problems tripping the circuit breaker turning on any amplifier. I never turn off the #16 and it draws around 230 watts and runs cool for a Class A design. So, I would not call the #16 a "green" design, but not expensive to run. Also you can put it into standby to conserve more energy, it only takes a few minutes to come up to speed because the standby mode keeps the caps charged.