funkydoug Posted May 19, 2021 Share Posted May 19, 2021 hi, a while back I put a Groove Tubes valve / tube in my ABM head and it is brilliant. Clean glassy tubeness without much breakup. If I want to go the other way and get a really thick dirt sound, can anyone recommend a tube? Cheers, Doug Quote Link to comment Share on other sites More sharing options...
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