Yes, you are right. The stock J20 is a very bright amp. Basically, it has the bright channel of brown Deluxe and even a brighter channel.redchapterjubilee wrote: ↑Sat Mar 27, 2021 4:24 pmReviving the old thread, as I did indeed pick up a J20 last summer. I am looking to use it as a grab and go to practice and I find this amp to be take your head off bright with my Jazzmasters. Just wondering if lgorilla is still digging the GC64 in the J20. I’d like to knock some of the treble off and have plenty of efficiency. Mine is stock other than a recap job and a retubing.
A simple mod described above (remove 470pF bright cap) on one channel and ad .003uF cap on other returns it to brown Deluxe specs.
GC64 takes even more brightness away without making the amp dull or muddy. It works with JM and Jag for me. This amp is a little gem.
Hope this helps.