Musician Forum - Band Discussion Board - BandMix

Hi Folks

Do any of you gearheads out there use a JTM45 (Bluesbreaker) head? I am having awful problems with, ahem, my bottom end...

When I crank it (which let's face it you are supposed to) the response on the lower strings is awful, no definition and dying in fizz. Marshall have checked it over and say it's fine so I can only conclude that something somewhere needs upgrading or modding.

Any ideas or similar experiences?

My tech was complaining about another amp very similarly to yours, turned out to be a bad tube.