Nice to see some AirTight talk on this site. To me, this is one of the best marques that no one ever talks about on this site. We hear a lot about Audio Research, Cary, Conrad Johnson, Rogue, VTL, etc., but as has been mentioned previously, the Air Tight is at least one or two steps above these other brands. I have to reiterate, it all starts with the transformers. The most expensive, most important part of ANY tube amp. There are only a few companies who use no holds barred transformers. Air Tight, Audio Note, Jadis, etc. This is what separates the men from the boys. It extends from the lowest lows all the way on up. Of course, the level of parts used in their products doesn't just include the transformers. It's all of their parts that make the grade. Air Tight is sweet, seductive, powerful, and beautiful. Asa, I really hope you opt for this amp. A very good friend wrote to me last week about the same SET amp you are considering. This is a guy who gets his hands on the best of the best. Not what most of us get our hands on, I mean the good stuff. It was obvious he liked it. That speaks volumes. While I have yet to hear this amp, I have to say their EL34 and KT88 based amps impress the absolute heck out of me. The only thing that doesn't really turn me on about their amps is the lack of ability of tube substitution(EL34 for KT88/6550/KT90 and vice versa). I get to hear a lot of tube amps, but these are a different breed. Good luck!