Hi folks, I have one of the first generation Bassbreaker 15 combos and find that the clean channel especially suffers from the dark muffled clean that many report. I even returned it to the vendor under warranty to investigate - nothing found/muffled, dark sound not heard (including for the fx loop fix - apparently didn’t need it; also for hiss when all knobs to ‘zero’ and reverb turned up - apparently didn’t need it; go figure). I’ve tried many suggestions for settings from multiple forums without satisfaction. Has anyone successfully carried out modification on one that gave proper Fender cleans at high volume? Cheers x