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ABM 600 valve noise

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Hi, I was wondering if any other ABM 600 owners could chime in with their experience/advice? Mine seems to have developed a big buzz when I engage the valve. Enough that when I was practicing with others, they'd ask, "what's that noise?". It's silent with it off. I'm guessing it's probably the valve that's gone. Disappointing as it's only 18 months old, but I know tubes can be temperamental! 


I did email Ashdown but didn't get anything in response...

Edited by MichaelDean
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Nope that wasn't it. I swapped the tube and no change. The noise also wasn't present when I went from the DI to my audio interface, just through the speaker out and it starts whenever I hit the tube button. Doesn't seem to be related to the position of the pot for the tube drive. Sounds like it is a job for @Ashdown Engineering!

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  • 2 weeks later...

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