@analogshop "I know exactly what is wrong"
Can you please explain the problem?
I have a Sonic Frontiers SFL-1 Signature rev.3 1994, does the problem also affect this version?
Thank you
Sonic Frontiers SFL-1 Siggie Hisses
abrupt onset of loud (OK, clearly audible at idle) hiss with degradation in sound quality from R channel of my Siggie.Swapped tubes, switched input, swapped input channels - no diff - swapped output to amp, switches sides to L. Any ideas about zeroing in on problem? I may have local (well regarded) guy repair it with schematic; already sent it back to SFI once for tune up in Canada, but this takes forever!