What is the best 2A3 SET Amplifier?

I agree with Edle that Audio Note makes very good SET amps, but not everyone can afford them. I agree with clueless, unless you know for sure you can live with a 2a3 for all the types of music you listen to, I would buy one of the consonance or bottlehead amp kits over the Audio Note. I also believe there is no 'best' it is all relative to the rest of your system, musical tastes and budget IMHO.

I beg to differ with the assessment of "Made in USA" amps being "poor design, low parts quality". My Moth s45 uses excellant "stock" parts INCLUDING Electra-Print OUTPUT TRANSFORMERS that were designed specifically for this particular amp. Speaking of quality iron, Welborne uses Magnaquest transformers and yet you still feel that equates "low parts quality" - interesting.

The Utopia Audio 2A3, the best

Haipo, I second the vote for Audio Note kits, and I'd bet this would sound fantastic with Unos:

http://www.audionotekits.com/PM_Integrated.html

Resale is good and it's a hoot to put together. There are also many well-documented upgrade paths with this amp so that you can experiment and push the envelope--all the way to a full silver signal path with silver output transformers! Building and listening to this amp, you might find a new aspect of this hobby to enjoy.

Doug

I like my parallel SET 2a3 monoblocs (Audionote uk Kagekis). They probably have more than enough power for the AG unos.

There are plenty of other amps that would work well with the AGs. I've heard Duos with a variety of amps and they did not seem to be particularly difficult to match to amps. The Duos sounded different with each amp, according to the particular qualities of the amp, but they sounded good with almost everything decent. I particularly liked them with the Art Audio PX-25 amp and with the Viva Solista.