GK Fusion 550 hiss
Hi All, I have a GK Fusion 550 that I bought new about 2 years ago. It seems to have a lot of hiss, have tried the gain hi and low, tried it in active and passive modes, changed cabs over, new leads etc. I am thinking that it may be a dud valve, it currently has 3 X JJ ECC83-S in it. If I go down the road of buying new valves, should I go the same or is there a better valve available?
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