I have a later one with the larger air gap OT and is amazing for low volume clean work. I use a detuned 1X12 cab built per Kevin O'Connors speaker cabinet book... mucho bottom end. It's loaded with a WGS ET65. The amp sounds like a good BF Fender, just not as loud. But, with the cab and speaker that I am using it is much louder than a BF Champ. Anybody else using Hi-Mu amps? Supposedly there is a person that has bought the rights and leftover parts from Barry but, I don't know if he has started building them yet... if he does... grab one.