Leave an amp "on" permanetly

Mrtennis
You might benefit by getting a good power conditioner, one that regulates current. Especially with tubes, its not a great idea to plug into the wall if the power source is subject to noticeable power fluctuations. This can really shorten the life of the tube.

Both my tube amps (Audion PX25, EAR 859SE)and solid state amp (Threshold T-200)dramatically improve once they are hot, and a hot tube technically optimizes tube performance. So, sorry to here about your power situation, please accept my recommendation along with my apology for ribbing you.

I left an Aragon 4004 MK II on for about 8 years, and never once had a problem.

I sold it when I moved from London back to NY and the amp looked and sounded as new.

Oh and "green" why on earth are we talking about green!?!

This is AUDIOgon.

I've got a DNA 0.5 Rev A, and my system sounds horrible when cold (I literally walk over to my speakers to check if the tweeters are working -- it's that bad). After a few hours of actively playing music it starts to open up and sing, but it probably takes a bit longer than that to really hit its stride.

I leave my system on 24/7 because I don't always get to plan when I get to do some serious listening (2 kids have brought that to a crashing end), so my system needs to "wake up" immediately when I need it. I do a lot of other things to help the environment, so I don't feel too bad about indulging in this one area. I run all relatively cool-running solid state so it could be a lot worse.

Also, a while back I read a post here that mentioned that light bulbs frequently blow out when they're turned on because that's when they experience the greatest surge/stress. I'm no electrical engineer, but this makes sense to me and I cringe every time I have to turn my amp (and other components) on and off. I've left all my equipment on for many years with no major problems, so in my experience leaving components on 24/7 has at least done no harm.

So my advice is to recycle your trash, buy a fuel efficient car, and leave your stereo on and enjoy it to the fullest with a clean conscience.

Hey there could be an upside to prematurely wearing out your amps by turning them on and off as needed: a damn good reason to go out shopping for a new one. By golly, the horror!