Hello everyone.. i've got this Hiwatt SS amp and one nigth while playing it just suonded stronger for an instant and than shot to silence.. after the show, at home i tried it again an di noticed that for the first 30 seconds it sounds well, than the clean suond start having a noise in background, almost saturating while playing at low dinamics,  than if i play even a string at the normal strenght i use it make this peak of volume than it shut up.. any idea?
sorry if my english is poor, i hope you understand something of this!!
thanx! :tu: