This unit has 16 effects which are very effective for singing. I use this for Sing snap and Second life and as soon as the people in Second life heard the sound everyone wanted one. And guess what there only about £38 GBP. I remember buying a reverb unit second hand once from a music shop for over £100 and it only did that, Reverb! This does that plus Chorus, flanger, Phaser, loads of types of echo effects, reverse, delay and pitch shift and all of these effects are adjustable from nothing to too much. It has a button to turn the effects on and off instantly in case you need to speak without the effects and then switch back quick.
If you sing I would very highly recommend one as there not only awesome fun on the pitch shift and reverse effect but uber at sounding like the classics. In fact I love it that much i AM going to find a way to get a sample on this page of its (hmm not much effectiveness lol) brb gonna grab me some uploading and html :)
..............time goes by.....
Finally found a Media player hope you get a good indication of the great effects this unit has for the price. Although I only did a quick test each effect can be altered to varying amounts to produce a ideal sound you want.
Hope you choose to get one and have as much fun as I have with this.