I called a CL ad for a small amp for 20.00 - Champ or Frontman ? A gentleman answers and tells me he sold it already BUT he has another one that he doesn't know if it works or not ? I ask him what is it - Super Champ XD. I don't have a way of testing it - he tells me . I said no problem I can bring a guitar and cable and see if it works. It was his Dad's and he passed. I went over and set it up and it came on but would not put out any sound - both tubes lit up ? Bummer ! I said well it's more than big enough for a 10" cab - I will "roll the Dice" I asked him what he was thinking - he's says 50 I counter with 40 Done Deal ! I had to sit on this for over a month - My buddy Rich was in Indiana for the birth of his first Grandchild. Finally he got home and I brought over to him for a look. Turns out the 12AX7 was shorted out - nothing else was wrong - he had a brand new one he didn't need and it fired right up ! I have 4 cabs where this didn't always work - but I have been blessed more than a few times ! I'm liking this amp except for the speaker - I think I'm going to try a celestion TF0818 ( PA speaker ) Quilter uses them in their small combos. When this situation presents itself - I say Roll the Dice ! Enjoy ! !