Hey all, I have a Fender Super Sonic 22. It's a 1x12 combo amp that I've had for about a year and a half now. It was a display model for the store I bought it from but out of 5 of the same amp that I tried, it was the only one without any quality control issues. (The reason I state that is I don't know how many hours of play are on the tubes themselves). My problem: I noticed today when I have the amp up anywhere past 3-4 on the clean and burn channels I can hear a "cccrrrrrrssssshhhhh" noise when bending the 12th fret of the high E string. The noise is present on both channels when turned up to moderate volumes. The amp does have a spring reverb, with associated tube in the amp. However, the sound is still present with the reverb at 0. I have noticed however if the reverb is all the way up, there does seem to be some feedback that occurs. Solutions: I think I may have some preamp tubes to change, however, with the main concern of both channels being effected by this distortion type sound, anyone have any ideas on whether this is a truly a preamp tube or power amp tube issue?? Thank you for any support!