TOTL cool running amps with fast 'warm up' time?

AVM is a pretty cool brand.  They do a lot of hybrids and have a unique tube made for their input stages.  Udo who owns the company is an ex-Burmester guys so you get an idea of what to expect.  

Visually it is a little different.  They do a lot of clear tops and one of their all-in-ones used to be available in a completely clear case.  They show with a whose who of speaker brands.  

Stay with the Pass amps. It is very hard to do better, easy to do worse.

Look at Clayton Audio amps.  Class A but they have a low-bias switch so you can leave them on without heating the house or blowing up your electric bill. 

Rowland M925. Run very cool. I leave my on all the time except when I travel or when there is lightning in the vicinity.

Ya  rowland and boulder seem interesting. 

@mijostyn did you hear either? 

@soix will look into clayton