Does Changing The 12AX7 Tubes Make A Difference with In The ART MPA Preamp With Vintage GE Tubes
Take a modern ART MPA II dual mic preamp with stock Chinese tubes and swap them for a pair of classic GE 12AX7's. Can you hear the difference with a mic and direct instrument sound? This also shows you how to DIY swap the tubes. I think it makes a very nice difference.
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