Class a a single ended amplifier this uses 1-6V6 power tube. 1-6x5. 3-12ax7s. This amplifier was removed from a working reel to reel. this Would be an awesome amplifier for guitar project is almost plug-and-play as it sets. With little alteration this would be a killer a little deal. This is being sold for parts or repair you get all the tubes except for the 12ax7s. I will throw in the box that it came in and the speakers that it ran. This is has an eight ohm output. The 6v6gt is the smoke glass Silvertone. This amp runs 4-5 watts of output. please look at photos message with any questions it also comes with two schematics very neat little project thank you. This amplifier both the power and output transformers are Woodward- Schumacher