Alright - had a few days to live with the Champ....overall, very pleased. Do not like the overdrive sound at all - sounds like a bad fuzz pedal, so speaker and maybe tube replacement will be in order. I'm getting some 'sizzle' sounds out of the speaker after it warms up....sounds like bacon cooking but without the delicious smell. If it had the smell, I'd probably leave it alone Thinking of going with the 6" Weber Alnico replacement speaker, Tung-Sol 6V6GT power tube, and a Jan Phillips 5751 for the preamp. Seems like the preamp stage needs to be tamed a little bit in this amp.