Hi guys. I have a brand new Twin Reverb Reissue (I purchased it 3 or 4 moonths ago). It sounds great and I love every aspect of it. Except for some hum I've been getting. With nothing plugged in, when I turn every knob all the way up to ten on both channels, it is like you could hear a running shower through a closed door, or a storm through a closed window. If I turn the volume of one of the channels to zero, the hum is half as loud. I noticed the reverb adds a lot of hiss when I turn it up. The treble knob makes a huge difference too. The mids knob adds some noise and the bass knob makes no difference. I also noticed that when I put my finger close to the bright switch on either channel, the hum increases and sounds almost like feedback noise. This is kinda funny cause I don't even have to touch the amp for that to happen, coming close to the switch with my fingers is enough. Switching it (the bright switch) on and off makes no difference in the noise, though. Playing live or even in a studio with my band, I can't hear the noise. But I figure it could be a hassle when recording. Is this normal? What could be wrong? Should I tweak the hum balance a little? Thanks!