Fender Dual Showman (1963–1967)
Fifty-two pounds of head, no speakers, and a 4-ohm transformer built to push a wall of JBLs - the piggyback that made the Twin Reverb look sensible.
Overview
The Dual Showman is a tube guitar amplifier head, not a combo. It's a standalone chassis meant to sit on top of one or more external speaker cabinets in Fender's piggyback arrangement. It was produced primarily from 1963 to 1967 as part of the blackface series, with silverface variants continuing into the 1970s. The head alone weighs 52 pounds. It's a transformer-and-steel piece of equipment, and the weight is the price of the power section inside it.
That power section is rated at 100 watts of clean, dynamic tube output, built around a ten-tube circuit with four 6L6GC output tubes. Owners report it as one of the most powerful amplifiers in Fender's lineup at the time, and the comparison point is internal to the catalog - the 100-watt rating was a significant leap over Fender's 40- and 85-watt offerings. One retailer listing for a black-panel example of this same 1963-1967 run carries an 85-watt figure instead, which collectors have never fully reconciled with the 100-watt rating that dominates the documentation. Treat the headline number as 100 watts with that caveat attached.
The circuit is twin-channel, with normal and vibrato channels sharing the same basic preamp topology found in other blackface-era Fenders. Both reverb and non-reverb versions were built. The amp was engineered to drive one or two Fender 412 "The Wedge" enclosures, each loaded with four 12-inch speakers. The pairing most associated with it in period photographs is the 2×15" cabinet with JBL drivers.
Key Features
4-Ohm Output Transformer for Two 8-Ohm Loads
Here's what separates the Dual Showman from its closest sibling. The Twin Reverb runs a 2-ohm output transformer. The Dual Showman runs 4 ohms, specified for two 8-ohm speakers. That impedance choice reflects the cabinets it was meant to sit on rather than any tonal philosophy. The 1963 2×15" cabinet used 16-ohm speakers wired for an 8-ohm total load, and two of those cabinets in parallel land exactly where the output transformer wants to be. Players who assume any Fender piggyback head will drive any Fender cabinet should check the math before plugging in.
Ten-Tube Circuit with Four 6L6GC Output Tubes
The output stage runs four 6L6GC tubes, a type known for headroom, clarity, and reliability when properly biased. The full tube complement as documented for the silverface reverb version is three 7025s, two 12AT7s, a 12AX7, and the four 6L6GCs. Collectors note that the power section is sturdy, but this is still a tube amplifier of the era, so periodic maintenance and tube replacement come with ownership.
Low-Power Mode by Pulling the Inner Output Tubes
Pull the two inner 6L6-GC tubes and the amplifier converts into a two-tube push-pull configuration, dropping output to approximately 25 watts. It is not a variable attenuator and it doesn't pretend to be one. Owners report that the reduced setting sacrifices bass response and overall headroom, and the tone becomes noticeably softer and less defined.
Piggyback Chassis Built for Touring
The head is designed to be paired with one or more external speaker cabinets rather than carrying its own drivers. The chassis was built to withstand the rigors of touring. The heavy, fragile speaker cabinet stays on the floor while the electronics ride on top, and either half can be replaced independently. Both reverb and non-reverb versions were offered, and some players prefer the non-reverb head, arguing that the reverb circuit can degrade the clean signal path when disengaged.
Historical Context
The Dual Showman emerged during a period when volume demands from large venues and rock acts pushed manufacturers toward higher-powered systems. Fender's own owner's manual places it as a direct descendant of the Twin Reverb and the 410 Bassman, two amps that shaped the company's tube lineup. In the catalog hierarchy, the 100-watt rating positioned it as a flagship head for players demanding clean headroom at high volumes. Its original price reflected that: a 1965 model listed at $915 in December of that year, among the most expensive amplifiers Fender sold.
Jeff Beck used blackface Dual Showman heads with 2×15" cabinets during his time with The Yardbirds in 1967. Jimi Hendrix acquired new Dual Showman amps in 1968 and often ran three of them in tandem with 2×15" cabs. David Gilmour was documented using a 1972 Dual Showman Reverb during recordings at Abbey Road in 1975, which says something about how long the design stayed in professional service after the blackface era ended.
Period coverage turns up the amp in unexpected places. A 1978 Modern Recording piece (November 1978, p.42) describing an on-stage monitor system recalled a rig built around six Fender Dual Showman amplifiers with 2×15-inch JBL speakers in each cabinet. The writer's point was that at the time he could not imagine anything louder. A 2007 Mix interview (July 2007, p.119) has engineer Bruce Bogle recalling a session where he played a recently purchased Fender Jazzmaster through a Fender Dual Showman.
Collectibility & Value
Blackface models in original condition are the ones collectors chase, and the Dual Showman sits in the high-end/boutique tier in the current market. Original pricing data survives for the 1965 model at $915 in December of that year. A 1962 example, potentially an early or misdated unit, was listed for sale in "excellent condition" by MM Guitar Bar, though no sale price was disclosed. A 1971 Dual Showman Reverb TFL 5000X has been listed with an original price of €977,00 and a current price of €879,30, so silverface reverb heads trade well below blackface money.
Modifications are not uncommon. One owner reportedly converted a 1967 non-reverb head into a combo by housing it in a custom cabinet. That's a reasonable move given the modular piggyback design, though it does remove the head from original-condition territory. Speaker cabinets are a separate market: the 1963 2×15" cabinet with its original pair of JBL D130F speakers, professionally reconed, is the pairing most buyers want. Replacement transformers for the Dual Showman Reverb turn up from parts suppliers, with output transformers listed around $178.90. Transformer failure is the expensive failure on any vintage Fender.
No exact Fender Dual Showman listings were live at the time of writing. Anyone shopping should expect to verify circuit designation, since AA763, AB763, and AC568 all appear in the documentation. They should also check whether the head is a reverb or non-reverb unit, since that distinction drives both price and the signal-path arguments among players.
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