Recommend small, low power but low noise monoblocks


I've long thought I'd like to go to try build an active crossover system with dedicated monoblock amps driving high efficiency speakers. (2 way system only)


What amps would you suggest?


I listen to chamber music, acoustic and some jazz at low to moderate volume levels.

This would be a computer based source.


I'm willing to entertain the possibility of a DIY route if that works best. I have some rudimentary DIY skills -- I managed a successful assembly of a Bottlehead Preamp.


I really want neutral sound with a very low noise floor. I think I prefer the no fuss of solid state but would not rule out tubes.


Any thoughts you might have would be appreciated.


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I have a pair of Quicksilver Mid Mono amps and they are great.....you can run EL34, 6l6, KT66, KT77, KT88 ......  40 watts, quietest amps I've ever owned.   They make two smaller versions for more efficient speakers.   
The best amp I have ever heard is First Watt SIT-1 which a friend of mine wanted to hear with my speakers. They were not powerful enough for my speakers, but it sounded much much better than any other amps that I heard with my B&W 800d. Since then, I start wishing my speakers would be more efficient...

It is a class A amp.
First Watt DIY sounds like a perfect fit for you. I've heard many all punching way above their weight class and without doping ;-).
Cheers,
Spencer