Well i stumbled across an old danelectro challenger awhile back and i had it gone through. It works great but i cannot find any info on it. I also have a custom kraft x-100n that i will have gone through but works good now. It only has one knob that turns the amp on and is also the volume. It is the second custom kraft amp that i have(the other one has the cool greenish 3d front and sounds excellent). I have been looking all over for more info on these 3 amps but cannot find much of anything about the danelectro or the St louis music made custom kraft brand. ANY help or info will be greatly appreciated. Randy