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1981 Mesa Boogie Mark II B Vintage 1x12 Tube Amp Blonde 60 Watt w/ EQ & Reverb


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Up for sale, a 1981 Mesa Boogie Mark II B 1x12” combo in excellent condition and in perfect working order, complete with the original footswitch. An early example of this pioneering Mesa Boogie circuit, this Mark II B is the 60 watt iteration with both Reverb and graphic EQ on-board.

Loaded with a Mesa/Celestion Black Shadow MC-90 speaker, this Mark II B delivers quintessential Mesa cleans and rich, focused overdrive, with a wide range of versatile, vital tones easily accessed via the deceptively simple control configuration. There’s a natural fatness and punch to the sound, engineered to complement just about any pickup you throw at it, and dialing up the higher gain settings yields a harmonically-complex, unrelenting distortion. The clean/gain channels can be toggled back and forth with an external footswitch (included), a feature introduced via Mesa's Mark series and now widely considered industry standard. Controls include Volume 1, Master 1, Lead Drive, and Lead Master knobs, with Pull Bright, Pull Shift, Gain Boost, Pull Lead, and Pull Bright (Lead) push/pull controls, as well as a three-band EQ (separate from the five-band graphic EQ). The Presence and Reverb controls are on the back panel, along with the Slave Level knob, and Effects Loop Send/Return.

The circuit is virtually untouched (save for one F&T electrolytic cap), with original transformers manufactured by Schumacher, dating between the 21st and 39th weeks of '81. The CTS pots have visible date codes from the 1979 and 1980, and the chassis is hand-dated 12/16/81. The tube complement comprises a pair of JJ 6L6 power tubes, and all JJ valves in the preamp save for one Mesa-branded valve.

The original blonde tolex is well-kept with light wear on the enclosure edges, and the original wheat grillcloth is also present and similarly preserved. The faceplate graphics are pristine, and all of the original knobs are present. The nickel-plated lower corners exhibit modest patina.

The original channel switching one-button footswitch is included.