Audio Note Soro and Oto amps don’t put out that much heat, but, they do cost a bit more $5k. With tube gear, decent sounding stuff will cost more than $5k unless you buy used gear. If can find a good used equipment dealer, that is the way to go for tube gear.
I like the sound of low-powered tube amps, more than I like high-powered tube amps and solid state. I don’t think any solid state amp sounds quite like a good tube amps, but some are quite good. But, some of the ones I like, like those from First Watt, run quite hot and you would also get looking at used items. I also like the Sugden suggestion and I would add Lavardin.
I know it is a matter of taste, but, I personally did not like the three Decware amps I heard. The sound was too whimpy to me; they lacked the liveliness that I prize in good tube amps.

