Marshall AVT Replacement Pre-amp Tubes?? - Jemsite
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post #1 of 3 (permalink) Old 09-29-2004, 07:28 PM Thread Starter
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Marshall AVT Replacement Pre-amp Tubes??

I've got an AVT 150 head and was wondering if anyone has changed out the 12AX7 preamp tube for a hotter one?

In theory it should be just like the all-valve heads, right? Not much on a google search either.

Sovtek makes some tricked-out pre's as well as some company in China.

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post #2 of 3 (permalink) Old 09-30-2004, 09:45 AM
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Hotter than a 12AX7? Nah, the AX7/ECC83 is as hot as they come. You could try swapping out a few different ones to see if it helps.....if you can even find the damn thing in there among the SS components & ribbon wires.

Don't expect your AVT to sound like an all tube head regardless of the Marshall ads. All tube and hybrid/SS amps are totally different beasts.
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post #3 of 3 (permalink) Old 10-01-2004, 09:56 AM Thread Starter
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Thanks Jeff- you are right they are different beasts. My old Marshall heads are easy to soup up- and I believe the AVT can be too- just haven't found out how yet.
Mine may be the first!!
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