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valve amp marshall avt150
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  1. Amps and Amp Modeling
    Hey, recently I lost alot of gain in my AVT150, I also get a nasty hum and a muddy sound on clean. I played whilst the valve was visible and it was glowing orange, now people on here say orange is good, but i've read elsewhere that blue is good and orange bad? I've also seen photos of them Avon...
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