@mulveling is the heat output that insufficient from Class A to say Class A/B? I'd imagine the fins on solid state amps tend to hold on to heat rather than dissipating it up into the air/surface. I use a portable air conditioner in the room in the summer, but these things are loud as all hell so I imagined a slower heat rafitijg amp for summer would help alleviate heat and cold fighting for space in the summer months.
@tablejockey I love my Primaluna amps, I'm more curious to try something new and have been looking at more Allnic gear after just acquiring their H-5200 Phono. Then I got to thinking about more tubes and more heat which got me thinking of going to try solid state. My room is an upstairs southwest facing, 9x15 box that the sun bakes all day long. House AC doesn't work, and as a renter we've been forced to compromise with portable AC units in every room.