Any thoughts on the noise level of my F-1X. When the bright switch is engaged, it is especially noisy. Even without the bright switch engaged, it is noisier than it should be. The tube has never been replaced. Should I check ithe tube? In a recent live performance I opted not to use the XLR out to the mains because the noise would have been transfered to the mains. I opted for a direct box instead. I would prefer to get the noise level down and continue to use the XLR out. Thoughts?
You might try cleaning the jack contact switch inside the back with very fine folded bit of sandpaper, try another tube, and try cleaning the jacks from the outside with a 9mm pistol cleaning brass brush with a little alcohol (not the kind you drink) on it. I also try inputting my bass at the effects loop return instead of the front jack and see if it's more quit that way when recording.