I played one of these briefly the other night, and was really impressed with how it handled single note stuff. Great complexity, bloom, texture, etc. Not what I expect from a Marshall type amp at all. I dropped Graydon a line, and he described his 18W as a very accurate copy of the Marshall 18W (with some changes, such as supporting 120VAC). He describes his 18W S/C as the normal channel of his bigger 18W. This blows me away. I've never liked any Marshall at all I've played through (other people sound awesome through them), but I would have never thought what I was getting out of that 18W S/C was Marshall.