I have a Sophia Electric MC 300A Integrated Amplifier which I use on AG Trios. Both the amplifier and the Company are top notch. I agree with mt1045 that the personal service one gets from this company makes buying anything from them a pleasure. I heard many different amplifiers for these speakers before getting the Sophias. Their electronics are very reasonably priced and outperform products costing much much more.
I bought a pair of Royal Princess 300b whose specs were stressing my 300b SET. (The measured mA was on the high end of the curve, and my Ancient Audio had a protective circuit that tripped after about 2 hours of use.) Because I live in DC, I visited Sophia Electric. They combed their inventory to find a pair of tubes that worked perfectly in my amp and did not charge me for the replacements.
I havent had the pleasure of hearing any of their amps - just their tubes, with which I am very pleased. But if I was in the market for an amp, based my dealings with Richard and Sue, I would have no reservations.
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