Hi there, I've been using an Alesis MicTube Duo at the end of my chain for recording recently and I think it warms up the sound quite a bit. Since it starts peaking at 9pm on the dials, I wonder what would happen if I changed it out for a 12au7? I went to a local music shop and the guy said he'd never heard of anyone wanting to do anything like what I was talking about. Besides, he didn't have them in stock anyway. Would I really just be making it so I can turn the gain knob up higher? Would there be any real benefits to this "mod" anyway? Cheers.