Do you keep your amps and preamps on all the time

I switch the amps and pre to standby when I go to sleep and work. If I leave them on to much heat is generated and I have to run the AC more.

My electric bill actually went down $6 a month once I started leaving everything on idle 24/7. I'm outta town right now, so the system is down!

I'm running a Bryston 4B-ST now & it only gets hot to the touch, in the 90's when I was a Krell junkie you had to sit naked in your listening room in the summer.

I actually recall talking to a Krell owner who lived in AZ who installed his components in a hall closet w/ long xlr's, then added a window air-conditioner which installed in the closets exterior wall!

Heat does have a whole lot to do with leaving it on!
When I got back into Home Theather in 1999 I picked up a Sony Str-444ES for Dts. The Sony sounded great when it was left on, however once I left it on for 72 hours straight & the A/V rack shelf above smoldered!

The Sony got hotter then any Krell Kst/Ksa of the same wattage! Forget eggs & steaks!!! You could have taken a Video Corespondence Blacksmithing course & use the Sony to bend Horse Shoes!!!

The Sony was dumped for a Denon Avr-4800 w/ a built in fan which served me well for 3 years, on all the time & never an issue.

Does it pay to leave it on 24/7, yes in my case I guess the whole initial firing up pulls a whole lot of juice.

Secondly I enjoy not having to wait to listen, as there is a major sonic difference having SS equipment on 24/7!!!

As long as you components Heat isn't a Fire Hazzard!

Thanks for the input guys. I'll be leaving mine on from now on unless like Audiobugged, my rack or system heats up so much to cause damage to anything. My CD player has a display on and off switch so I"ll leave the display off when not in use.