No flash plug
Digitech Vocalist Live 3 is a self contained vocal harmony pedal which takes its pitching info from the input from a live guitar and generates harmonies from that.
You can plug your guitar and mic directly into this for a compact processing unit that according to Matt is blindingly simple to use.
Pricing and Availability
Emulate multiple mics, change proxmity and axis on the fly with UA Hardware
Eurorack module puts General MIDI sound set under creative CV control