This 5W combo with a single 8″ speaker is based on the tweed Champ, a ’50s era Fender entry level practice amp. It features a single 12ax7, a single 6V6 and a 5Y3 rectifier tube and is a cathode biased class “A” ckt. The only control is a volume pot/power switch. One of the most popular amps ever used for recording, it has a suprisingly good clean tone at lower volumes and will produce varying degrees of distortion, breakup, sustain and fun when cranked. Most famously used on the Eric Clapton classic, Layla as well as by Joe Walsh, Joe Perry and Billy Gibons.