... when Paul contacted me about his Mesa SOB 2x6L6 amp he didn't like the sound and unresponsive feel of the amp ... he inquired about getting his amp modded so I asked him to send me a schematic and further inquired about his tastes in players and experience with amps and guitars ... turns out Paul likes Jimmy Page's classic middle-periode tone, which is not an over the top distorted tone ... of course, Page was and is a Marshall amplifier player mostly - so the possibility came about reconfiguring his Mesa chassis into a 50watt Marshall MkII replica of some sort ...
... after settling on configuration options, we agreed to give it a go ... even though I'd never seen one of these before, the work went ahead and I used my Dremmel to carve out new trace arrangements on the existing pcb board ... the surgery took a week and it went well ... out came this sweet and responsive amplifier with good note definition and natural tone ... also with more power and a higher aggression level ...
... the mod features : (i) a Fender style power supply for a lively-er amp, (ii) EL34 power tubes, installing EL34's in a made-for-6L6 output transformer produces richer harmonics in the output stage, (iii) dual mode, Master Volume control - both Standard Configuration (with added ground lift) and Ken Fischer style Master Volume Controls for subtle variation a, (iV) a true single-channel front end ... in many ways it's still a conservative amplifier, but IMAO the tone with a Paul is *very much* worth the effort in the end - I strongly recommend going retro with EL34's on this chassis ... more info to follow ...
"... the Marshall metal face comparison; that was based on some messing around I did with a 50w head that belonged to a friend. It was a bass amp model for American export (powered by 2x6550's?), circa ~'72 or '73 as I recall -I'm fuzzy here, it might have had 2x6L6's in it, I don't remember. Anyway, there's a certain similarity between that amp and your retro mod to the Boogie..."
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