ok, well just the other day someone asked about this amp and i raved about it, now last night i noticed something that may not be very good...when i was playing notes on the d string past the 12th fret the speaker sounded like it was buzzing when the note was hit, kinda like a rattle mixed in with a buzz and the note...is this normal? i had the bass, mids and treble boosted, with the bass at 3 o'clock, hid mids at 11, low mids at 1 o'clock, and the treble at 3 o'clock. the gain was at 4 or 5 with volume b/t 6 and 8, the buzz is also especially pronounced when i play a note on the 14th d string fret, but seems to occur on every string after the 12th at that volume. the buzz seemed less when i plucked the strings with less force. i'm playing a mim fender jazz with stock everything and i normally play with a pick if that makes a difference... any suggestions or insights would be greatly appreciated!