i have this amp: it's an old Eko amp, rated at 30W. made in italy. with tubes. i am not a tech all i can say is that is the best amp i have ever owned and tried (i have treid a lot of amps and owned Ashdown, TraceElliot, SWR SM 400S, Ampeg SVT3 pro...now all sold). this amp is for me a mystery. i use the head only, a previous owner armed with a saw took apart the head from the cab and i own the head only. i use this head with a Ampeg SVT 410 He cab, nothing esoteric. how is it possible that this amp is by far better sounding that everyone else produced nowadays? how is it possible that it has old tubes, no bypass circuit, no cooling fan and i have never had a problem in more than 10 years while my Ashdown and my ampeg had big issues in a shorter period of using? how is it possible that this amp rated at 30 W is MUCH MORE LOUDER than every head i have tried out there? i can assure you that this heas is twice (if not more)louder than the others i have named above... is this watt thing only a marketing strategy? are the companies mocking us? i want the truth!