Dating mesa boogie amplifiers

Preamp tubes: four 7025 (12AX7 types)Preamp tubes: five 12AX7. Rectifier: solid state Controls: Volume 1, Treble, Bass, Middle, Master 1, Lead Drive, Lead Master, five-band graphic EQ; Presence and Reverb on back panel.

Speaker: EVM 12LOutput: approximately 80 watts RMS Simul Class, switchable down to 15 watts Class APhotos: Matt Hertel. Early Mesa/Boogie Mark Series amps were something of a sensation, but even with the line now having stretched all the way to the massively featured Mark V, many fans of these powerful little beasts feel the evolution peaked at the end of the Mark II range, with the Mark IIC .

Though at the time they were simply the next step along the line – a tweak to the Mark IIC, which was just a relatively minor twist away from the Mark IIB before it, and so forth – players soon noticed (often in hindsight) that these “ ” amps sounded fantastic.

Not only did they have a revised lead channel that issues delectably creamy, bright, high-gain lead tones, but their cleans were often hailed as sweet and superior, too.

“John told me he was starting a band and that he had found this bass player, John Myung, and a drummer who turned out to be Mike Portnoy.

The whole thing was just beginning.” Petrucci got his preamp, and he later ordered a Quad preamp, and after that, West says, he and the guitarist kept in regular touch.

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So, given that this wasn’t an entirely new amp by any means, what was the big deal about that Mark IIC circuit?“John was always looking to try new amps, and he often got stuff just as it was coming out,” West says.“He was always a great customer, and then he became a great friend to everybody here.And while any “ ” or scribbled initials in marker can obviously be forged by unscrupulous Mark II owners looking to add value to their non-“ ” amps, there’s another well-publicized test to reveal the hallowed lead circuit, short of sending it to Mesa Engineering to open up and verify.This so-called “loop test” simply requires that you plug a guitar into the “Return” jack of the effects loop, switch the amp to Lead, play a sustained note, and change the Lead Drive and Volume 1 controls while the note decays.