acidbass Posted June 24, 2008 Share Posted June 24, 2008 Hello all, I'm going to replace the preamp valve in my ABM500 combo to spruce it up a little! Has anyone performed such an operation in the past? If so, what valve did you use, and would you recommend it? Cheers guys! Danny Quote Link to comment Share on other sites More sharing options...
john_the_bass Posted June 24, 2008 Share Posted June 24, 2008 Whatever the standard valve is - what is the standard valve anyway? 12AX7? but who makes it? Quote Link to comment Share on other sites More sharing options...
umph Posted June 24, 2008 Share Posted June 24, 2008 probly wont impact the sound that much but i'd go for a good sovtek one Quote Link to comment Share on other sites More sharing options...
gypsymoth Posted June 24, 2008 Share Posted June 24, 2008 "a good sovtek one" that's an oxymoron. assuming this is a 12ax7/ecc83, if you want to warm it up some, a mullard/brimer/amperex would likely help. if you are after a bit less breakup maybe an RFT or Telefunken. Quote Link to comment Share on other sites More sharing options...
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