There doesn't seem to be a natural place for this topic, and I know Danny is pretty lenient so....
I just changed out my Knight KB-85 amp for something cooler for the summer. The old Knight runs class A and is one hot sun of a gun, but has a really sweet sound. My Moscode 300 is in the shop, so I'm making do with a Soundcraftsmen that usually stays in the closet. It's a bit noisy, but dang does it have excellent bass- and it runs cool.
Do any of the rest of us have summer amps/winter amps?