Miki - You can have 4 harmony voices pitched anywhere within plus or minus 2 octaves with whichever gender/effects/EQ you select. In addition you can also have voice doubling for that "double tracking" effect. The unit is 24bit which sounds far more realistinc (IMHO) than the 16 bit Digitech or arranger Keyboard built in jobs (Yammie, Ketron etc)

The unit I have the Voiceprism-plus which also includes voice modelling which blows me away. The unit is also very easy to use with far more presets/user presets than I require

The plus doubles both the EQ blocks and the effects blocks to 4 each. It also gives you digital connectivity if you are into recording.

I bought mine second hand for less than I would have paid for a Workstation EX.

If you can afford it or can find a cheap one then go for it - Leave all those munchkin voices behind you.

You can go to the TC-Helicon site and download the manuals to discover all the features.

Regards - Keith