Musicjohn,

I have the Voiceprism plus. As well as harmony and doubling this gives voice modeling and digital connectivity (SP/DIF etc)which is a must for recording.

If you read the user reviews on this unit at Harmony Central website (http://www.harmony-central.com/User_Reviews/) you will see that most users think this unit is great but there are some that think it is too noisy. The secret is to use a good quality BALANCED mike. Condenser is best if you are recording but I use an old dynamic EV with no problems at all for both live and in the studio.

Terry above is right - this and the other TC-H products are 24bit rather than the 16bit digitech and AR internal units and I think this shows in the quality. I have used both and the voiceprism is far superior. If you add the extra board or buy a Voiceprism Plus then you can alter the shape and sound of your lead voice and become anyone between Barry white or Mary Poppins (If that grabs you) - The voiceprism is more of a gigging instrument (sorry UD) than the voiceworks which is better at correcting those "wrong" notes in the mix.

You have to use these effects carefully and in moderation but it is far easier to leave the munchkin / Donald Duck / Speedy Mouse coices behind.

Live in harmony - KF