If you're not bass freak, than other part of sound is sweet. I had diy 6l6(in SET design triode only) based amp 4...5 wpc and was powering JBL 4312 vintage monitors that are 94dB efficient. the bass went down to 48Hz flat and to 41Hz with 5dB slope. I could get 97db/m SPL when turned volume all the way up. The volume control was initially passive but then I decided to use 12AT7 NOS Telefunken single duo-triode for both channels.
The total cost of SET amp and speakers were in $150 ballpark when I built it 15 years ago.
The total cost of SET amp and speakers were in $150 ballpark when I built it 15 years ago.