I passed a yard sale and a little amp caught my eye. I double back and go to check it out and it was the last thing I expected, a Silverface Princeton Reverb. I asked them how much they wanted and if it worked? "It works but smokes a lot of you leave it on for hours, $20". I'll take it. A new rectifier tube(maybe the source of the smoke?) and it works great. Needs a new cab though as it must have sat in a moist environment for a year or 20.