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Buying a new tube for my Hartke HA3500 Pre Amp, and input question!


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Hey guys, I am looking into getting a new tube for my '98 HA3500 amp and I am wondering if anyone has any good recommendations. I just bought the amp so I'm clueless.


Also the input jack tends to cut out at times and I have to jiggle it to get my sound back, on both the passive and active inputs, any ideas what the problem is and how to fix it? :confused:



Any input appreciated... thanks!

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