Don't get sucked in by the hype about tubes. The preamp to use for vocals, or drums, or anything else, is the best one you can afford. Many manufacturers have taken to putting a small tube in the front end of a preamp with variable control of the tube color (distortion). This is a hybrid, not exactly a tube amp. You know, some of the greatest vocals ever recorded were done with a FET mic and a solid state preamp without a tube in sight. Gee, the fact that the preamp cost $2500 bucks or more per channel, and the mic about the same may have had something to do with it.
So I have to use a tube preamp for vocals? I guess that old Neve just won't do.- Yeah, right. Well don't get me wrong. A good tube preamp is a lovely thing. So is a good solid state preamp. So is a good hybrid preamp. You get what you pay for, and the tube doesn't matter. The other thing is that tubes don't always equal color, and solid state doesn't always equal clean. I use a Joemeek twinQcs quite a bit, and I like it a lot. It's solid state, but it's precisely its color that I like, and it can be quite variable. If I use the built in optical compressor, I get color. If I use an RNC as an insert instead, it's a lot cleaner.
At any given moment, there's a piece of gear in a given price range that just seems about the best, and it changes every day. I don't happen to think the Blue Tube is one of those. It's just a matter of how much you want to spend. For cheap, the Audio Buddy remains unbeaten in it's price range. Logical steps up- Studio Projects VTB-1, then RNP/Joemeek VC1Q/Grace 101. The next horrifying level goes to Avalon/Pendulum/Great River/Davisound and many others. In the end, the quality of a preamp has a lot more to do with the quality and arrangement of the components than it does with whether or not there is a tube in it.-Richie