Kley De Jong | 9 years ago

This is an effort to document the tonal change when swapping tubes. The amp is a Fuchs ODS Mod. When it came to me it had Ruby 12AX7 preamp tubes and some Groove Tubes 6L6 power tubes. I've swapped them out for a set of fresh Tung Sol 12AX7's and JJ 6L6's.

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