Hallo, I have a Showman blond with the Factory No: A oo491. Could anybody tell me what was the production year. I bought the amp approx 1963- 64. It has the RCA 7355 Powertubes. After 50 years hidden it goes like new. I may have to replace one or two El-Condensers. thanks, Claus

I have ’66. The 12AT7 is for the phase inverter and is part of the power supply circuit. 12AX7 is for the vibrato and does nothing for the sound other than oscillate. The 7025 are just old military (quieter) version of 12AX7. So 2 pre-amp tubes.

I forgot to add that Showman and Dual Showman were built concurrently; one did not replace the other.

I have a 65 showman. With its original cabnet. I bought from the original owner. It has 1 18 inch speaker wich is all original , is anyone familiar with that. The sticker is missing on the speaker he had work done to the speaker at one time. Heavy cast speaker but original, i just do not see anything talking about 1. 18 inch speaker. Email. Bardwellanthony@yahoo.com

I have a 1965 Showman and a 1966 Showman, and I used to have a 1964 Dual Showman. RE: Tubes- Mar’ Himmerich is correct. Four 12AX7/7025s, four 6L6s. Dual Showman was made as early as 1964: Showman had an 8-ohm output transformer for a 1×15″ cabinet, Dual Showman had a 4-ohm output transformer for a 2×15″ cabinet. Fender occasionally got them wrong, as some have reported 4-ohm transformers in Showman, and vice-versa. I bought my 1965 Showman with its correct original 8-ohm transformer and its “matching” 4-ohm 2xi5″ cabinet! Due to years of being mismatched, the power tubes and sockets, grid load resistors, and speakers were pretty bad and barely functional. I had the speakers re-coned to 16 ohms (wired in parallel for a total load of 8 ohms), replaced tubes, sockets, grid load resistors and a few capacitors. That was about 18-19 years ago, and it’s still going strong!