I just saw Rosetta last night, and noticed that the vocalist uses some kind of all-in-one effects pedal. I don't know whether or not it was specifically made for vocals though.
I would like to have some effects on my vocals (live, not necessarily for recording), mostly reverb and distortion, though a "radio" or "telephone" effect that cuts all the lo's and hi's would be nice too. Looking on sweetwater, I found the Boss VE-20, which does everything I want (assuming that the amount of distortion can be changed, and that it's not just a fixed preset), but it includes so many other features that I would never use. I don't want to pay $250 for something when I'll only use about 10% of the features.
I plan on picking up an Electro Harmonix 12ay7 mic pre for live use, that I'll then run through an EHX Black Finger for compression, but I'm not sure what I should add to the chain for distortion, reverb, and the "radio" EQ effect. Can regular guitar pedals be used in a vocal chain? Would I (or should I) use the guitar pedals before or after the mic pre? Or in other words, will guitar pedals work better or worse on a mic level or line level signal? I know that "instrument level" isn't entirely standard. It's usually more than mic level (millivolts), and less than line level (1.2 volts).
Some of the connections might be a problem too. The black finger, for instance, does not have XLR in/out. Only 1/4" TS (tip-sleeve), so if I'm using an XLR cable for the mic, then I'd have to go to the mic pre first (XLR in), using the 12ay7's 1/4" out to the black finger, so I'd already be at line level. Honestly, I don't even know if the Black Finger is supposed to be used with a line level signal. It's for guitar and bass, so it's designed for instrument level.