Fender Blackface Showman

Model/Circuit Number: AA763
Years of Production:
1963 – 1967
Era: Blackface
Configuration: Piggyback
Controls: Black forward facing w/ white labels
Knobs: Black skirted w/ chrome center, numbered 1 – 10

  • Front: Normal: In, In, Bright Sw, Vol, Treb, Bass – Vibrato: In, In, Bright Sw, Vol, Mid, Treb, Bass, Speed, Intensity – Pilot Lamp
  • Rear: AC Outlet, Ground Sw, Fuse, Power Sw, Standby Sw, Speaker, Ex. Speaker, Trem Sw Jack


  • Dimensions: Head: 8 x 24 x 9½, Showman 12 (early): 21 x 32 x 11½, Showman 12 & 15: 24½ x 36 x 11½, Dual Showman (63-67): 24½ x 36 x 11½, Dual Showman (67): 45½ x 30 x 11½
  • Hardware: Tilt-Back Legs, Knurled Studs
  • Handle: Black Strap Handle
  • Feet: Glides
  • Corners: Corner Protectors


Covering Material

  • Tolex/Tweed: Smooth White (63) or Black Tolex
  • Grill Cloth: Gold (63) or silver sparkle grille cloth

Logo: Grill mounted, flat (63) or raised, chrome & black, script

Effects: Tremolo
~Watts: 85 watts

  • Pre amp: 2 x 7025
  • Power: 4 x 6L6

Bias: Fixed Bias
Rectifier: Solid State

Comments: In 64 Fender added the word “DUAL” in block letters above the script “Showman Amp” to the control panel of the Dual Showman. The Showman 12 was discontinued in 1966.

18 thoughts on “Fender Blackface Showman

  • October 29, 2011 at 11:55 am

    You have wrong information concerning the year Fender add the word “Dual” to the face plate, it was not in 1964, but 1966!!!! 

    • August 24, 2016 at 11:28 am

      Actually, the word “Dual” was added to the nameplate in 1967. My 1966 Showman (Dual) has the original dual showman output transformer. In addition, I still have a 1966 publication that shows all of the Fender Amps … and “Dual” does not appear on any of the amps.

  • August 23, 2013 at 9:32 pm

    ALSO THERE ARE 5 PE AMP TUBES 3-7025 2-12ax7 1-12at7.

      • July 20, 2015 at 11:02 am

        There are 3 type of people, those who know math and those who don’t.

  • April 3, 2014 at 11:21 am

    My ’66 Showman (chassis dated 1964) has exactly four (4) preamp tubes and four (4) power tubes. The effect circuit uses only one (1) tube.

    The first blonde heads originally had six (6) preamp tubes to support the 3-tube effect circuit and four (4) power tubes.

  • July 2, 2014 at 6:27 am

    Sitting in front of my ’65 Fender (Single) Showman, I count 2x 7025′ 1x 12AX7, 1x 12AT7 plus 4x 6L6.
    That’s fact.

  • August 2, 2014 at 11:18 pm

    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!

  • August 2, 2014 at 11:36 pm

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

  • November 24, 2014 at 3:51 am

    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.

  • March 28, 2015 at 6:14 am

    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.


  • May 17, 2015 at 8:27 pm

    The answer >1963=blonde & blackface & gold grillcloth>with that serial # is the 1st Blackface Showman made!?!#!

  • June 24, 2015 at 5:40 am

    Hello Claus,
    The 7355 power tube model of the Showman (and Twin) was a transitional model that was made from approximately September(?) 1963 until superseded no later than December ’63. One distinguishing characteristic of your amp should be the absence of the ‘middle’ knob on the 2nd channel (second channel will have volume ,treble, bass, speed, intensity knobs for a total of 5). If your amp still has the tube chart, there should be a two-letter ink stamp on it, first letter being ‘M’. The second letter is the month (‘A’ = January, ‘B’ = February, … ‘L’ = December).
    Also, on the top of the power transformer (black one on the far left as viewed from the rear of the amp), there should be some engraved codes; specifically “125P19A”, and “606327”.

  • January 24, 2018 at 6:27 am

    I have an old Silverface Dual Showman. Chassie stamped A 12712. Tube layout label marked AB763.
    The transformer has been replaced and is marked W022756. How do i determine the OHMs on this amp. I would like to assume its 4 based on what it originally was manufactured as… but is there a way to test with an ohm meter? Do you test it with the speakers attached etc. Any help would be appreciated. I’m no technician so go easy guys…

    • April 19, 2018 at 9:36 am

      Check the # on the output transformer. If the # is 125A30, that is 8 ohms. If the # is 125A29, that is 4 ohms.

      Another way to tell is to pull the amp out of the cabinet and look at the phase inverter “tail”. That’s the resistor connecting the input circuit to ground, right where the negative feedback loop is attached. A 47 ohm resistor is for 8 ohm output. A 100 ohm resistor is for 4 ohm output.

      The only other way to tell output impedance is to connect a 4-ohm dummy load to the output and see what the power level is at clipping. If it won’t go any higher than 50 watts, then it’s 8 ohms.

  • March 17, 2018 at 6:47 pm

    All this talk about which year was labeled Dual in front of the Fender, number of tubes, etc, etc… is useless chatter. I would suggest those who really want to know buy: “FENDER AMPS (THE FIRST 50 YEARS)” . There is basically no rhyme or reason to the way (or time) that Fender did things during these years. Let’s keep in mind the company was sold around ’64 and everything was being revamped by CBS shortly thereafter. Amps changed cabinets, speakers, chassis, knobs, grill cloth, tolex and stenciled names almost daily. Just for shits and giggles, I am staring at the back of my 1967 blackface Showman head (which plainly states: “Showman” on the front…no dual) and it has (from the rear, right to left) : one 7025, three 12AX7’s and four 6L6GC’s. For the “still math challenged” on this site, that’s eight tubes. BTW…it’s one of the sweetest sounding amps you’ve ever heard, regardless of what cabinet or speaker configuration you connect to it (as long as you are matching it’s recommended impedance and not substituting whatever you like..) Don’t be an idiot!!! I have an extensive collection of Fender guitars including a 1960 Jazzmaster, 65 Mustang, 73 Strat, 90’s Tele, 90’s Mexi Strat, and my favorite…the cheapest of the bunch, a Squier Bullet Strat (hardtail). along with the showman is a 1965 Deluxe (non-reverb model..believe me, they sound BETTER…read up on them) and a good old ’73 champ (tip: on a champ, turn the volume all the way up and the bass ALL THE WAY DOWN. Trust me, you’ll be amazed.

  • March 17, 2018 at 6:57 pm

    Whoops…forgot to add. My ’65 and ’67 amps have had no modifications other then tubes (and I DID replace the opto-couplers on both the Showman and the Deluxe…made the tremolo BEAUTIFUL on both). I bought a new Jensen speaker for the 73 Champ (highly advised). The old Utah they came with sounds like someone farting.

  • October 11, 2018 at 8:32 am

    I have a what I was told was a ’68 Showman amp with the face plate replaced with one that says Dual Showman. The label inside says Bandmaster and shows a diagram with 2 6L6s. I have 4 tubes. Also the diagram doesn’t seem to match the amount of preamp tubes that I have. I want to know what I own. Especially if I have the “preferred circuit board” I don’t have reverb so It’s not a Dual Showman right? How do I tell the year? The label is torn a bit. Also is this un-bias? Does that mean I can change tubes without having a tech adjust the bias? Any help would be tremendous.


Leave a Reply

Your email address will not be published. Required fields are marked *