Mesa Boogie Dual Rectifier Solo ( HEAD ONLY ) Cab. Not Included. The amp sounds great and works like it should. This is and early one, serial # R0715. Listing new items regularly. Buyer must contact us within 24 hours and pay for shipping, handling, and insurance. I ship world wide, but please understand shipping cost is for USA . There will be additional costs for international shipping. Please ask all questions if you have any concerns prior to bidding. PLEASE UNDERSTAND THAT IF IT'S NOT IN DESCRIPTION, IT'S NOT INCLUDED. Thanks and please check out my other listings. Here's some info. I found online.

Revision F (1992-1994)
Serials: 0643-3180

Output Trans: 562100 (early)

                        562105 (later)

Power Trans: 561136 (early)

                       561140 (later)

Power Tubes: STR-420 6L6

Preamp Tubes: Mesa 7025 (Chinese)

Revision F was a big change for the Rectifier circuit. The clean channel now used one side (or half) of each preamp tube position to create its Clean Channel, which brought with it improved dynamics, clarity and less grit.

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Rev F also saw the introduction of the all-new Triple Rectifier, the 150 watt behemoth that was so named not because it had three rectification modes but simply because it was a more powerful version of the 100 watt Dual Rectifier. Additionally, a rackmount version of the Dual Rectifier was now available for 1993 and came in black on black color config but could have a Chrome chassis for an additional $100. The earliest Rackmount Rev F I have found is #829.

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The earlier Mark III Output and Power transformers were also phased out around serial 1300-1500 in favor of the 562105 Output and 561140 Power Transformers that would be carried over into the Rev G amplifiers. This circuit is very close to a Rev G but with a different value Presence pot and a few other component values. Late in the Rev F run (approx. #3000) you also see the introduction of the Parallel FX Loop.

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Sonically, the Rev F has a throaty low mid grunt along with a much tighter low end response that metal players find especially useful. Sounds almost boosted plugged straight into the amp.