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    JVM410H Issue

    Hey Guys, So I have a JVM410H that was loaned to me by my band member. I took it home and tried it out, WTF?? I have owned 2 JVM410H and 1 JVM410HJS before. It just sound weak and dull and lacked gain. So I checked the tubes. Amp manufactured date - M2007 - 34 -1150. EL34's are also WK32/07. So...

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