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After getting the Mark III out and giving her a few test plays it was obvious that the old tubes needed changing. I actually had a brand new set of five JJ 12AX7's laying around from when I bought the Fender Blues Jr. I had planned to replace the tubes in the Jr. with JJ's, but I ended up not keeping that amp so I had these AX7's left over from that experiment. I replaced all five of the Boogie's preamp tubes with the new JJ's and the difference was immediate and striking. Much brighter, tighter sound and a much cleaner clean channel with a ton more headroom. I was still running old power tubes, until today...
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With the new power tubes in I can tell that the amp is much brighter, has more sparkle and has less early breakup. I expect the amp's tone to "warm up" a little more as time goes on and as the tubes start to break in and get a little "softer". It already sounds
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Thank you for lighting up my lantern since I've tried a complete set of Groove Tubes(both preamp and power) and my Mark III sounded like crap. It became so aggressive that it was unbearable. So, I put back my old set of JJ's and there I was back with my beloved Mesa. So I was wondering if I would retube it with new JJ's and you helped me make up my mind on this issue. I will order them right away.
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