I do a lot of metal bands and they tend to want distortion on the vocals for some or all of the tracks. I've tried using plugins like the grungilizer, I've run the track through the Line 6 POD, Sansamp Bass DI and a few other Guitar distortion boxes. For the most part the bands are satisfied, but I'm not happy with the results I've achived at this point. I'd like to use tubes, but I'm really not exited about running vocals through a $1500 guitar amp. Ive heard of people using tube mic preamps for this. The adverts for the Studio Projects VTB-1 suggests it is capable of "hard distortion FX". Have any of you tried this? Any other methods to accomplish this effect? And for those using the VTB-1, how does this thing stack up to your average low end mixer pre (i.e. Mackie, Alesis, ect...)for sound quality. The advert says "the VTB-1 is a totally discrete circuit" which I would associate with the high end pre's, but for $129???? Whats your opinion of the unit? Any comparisons you can give to other units? Will two of these sit on a single space rack shelf?