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
“You can try a Current Sensing Auto On/Off Outlet instead, plug the TV to ’Tools outlet’ and plug the amplifier to ’Vacuum/Accessory outlet’. , The amplifier will automatically turn on when you turn on the TV and amplifier will automatically turn off 7 seconds later after the TV is off. 

https://www.amazon.com/Automatic-Etoolcity-Technology-Overload-Eliminating/dp/B07YK9VBQK/ref=pd_cp_6...

If you are using a separate pre amp with your amp this is a bad idea.

To avoid potential speaker damaging loud pops remember - 
Turn amp on last. Turn amp off first.

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