Fender Showman
Little is documented about the Fender Showman, and the record is thin. What survives is almost all schematic and layout material. There is no narrative history and no full spec sheet. The amp is confirmed in at least two circuit revisions, the AB763 and the AA763. Both show up in Fender factory layout and schematic documents as the "Showman-Amp." A separate Fender document covers a "Dual Showman Reverb-Amp AA270," so the Showman name ran across more than one variant.
The schematics give a few concrete things. The AB763 layout shows 6L6GC power tubes, a 12AT7, and 7025 preamp tubes, with a 12AX7 also called out. Controls are Volume, Treble, Middle, Bass, Bright, Speed, and Intensity. The last two mean onboard vibrato. The drawings carry Fender's standard factory notice: resistors 1/2 watt 10% unless specified, capacitors at least 400 V unless specified, and voltages read to ground with an electronic voltmeter at ±20%. One accompanying document is labeled a "150 Watt Power Amplifier" schematic. Without a proper spec sheet, that figure can't be treated as a confirmed output rating for the Showman. Fender Electric Instrument Company is listed at Fullerton, California.
There are no reliable production years, original pricing, or cabinet and speaker configuration in the material at hand. The period magazine chunks for this model are OCR fragments that don't yield a usable review claim. One fragment from Modern-Recording (August 1981, p.58) does preserve a schematic-style tube layout showing 6L6GC power tubes alongside 12AT7 and 7025 preamp tubes, consistent with the factory drawings.
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