The Wolcott amps are a proven winner with Soundlabs. There may be better, but for the price, unlikely. They are very reliable, and do not rely on esoteric parts, or a stressed design. When an output tube goes bad, it will tell you which one. Just replace it ($15) and with autobiasing, you are good to go! For high current large amps, monoblocks make sense. They also facilitate placement close to the speaker, which means a short lenght of hook-up wire can be used instead of megabuck cables. Since they use balanced IC's, these can be as long as you need without problems.
Tube amp for Sound Labs
OK, I have used my solid state amp for long enough (a good one, Accuphase) and would like to try a tube amp for my Sound Labs. There are many choices: SET, OTL, EL34, Push-Pull, etc. What are your recommendations? Also, why are there so many tube monoblocks instead of single chassis stereo amps?