Cool running amplifier


I'm looking for an amplifier to drive Totem Sttafs in my main great room. It will be housed inside a cabinet - ample air around it and ventilation from the back, but since I want to leave it on 24/7 I want one that idles cool.

budget is <$700 for a used power amp or integrated. I have in mind a musical fidelity a3.x, or ps audio hca. Do these fit the bill? Any others that I should look for?  

Thanks!

bdgregory
Post removed 
@sfseay
I believe OP’s preamp is on 24/7 and I think he has to try those outlet to be sure.

Yes, my preamp will remain on 24/7.  I received the switch yesterday and will try it out today. If I get any unnerving power on sounds I'll abandon the idea. 

I still ill have a search on for a good class d amp or other suitable class ab amp.

thanks again . . . 

You should be able to find a used Wyred 4 Sound amp in your price range.  They run cool and you can leave it on all the time.
ok, so I hooked up and tested the switch. It works great. The amp turns on soft as soon as (ie right after) the tv powers up.  Once the tv turns off, the amp powers down soft again (counted 7 seconds as advertised). Thanks @imhififan 

With this device I can also add a fan if I need. The B&K St140 sounds good for TV, but I'm trying to do some streaming on this system so I would like to get a better amp.  I could use my Eagle 2Cprime which sounds great with the Sttafs, but the face plate is 19" and won't fit through the door.

So now I have a few amps I'm on the lookout for . . .