The Harmony-M does a great job for me as well. The vocal harmonies are very realistic and much cleaner than the Digitech VR, which I still have a pair of sitting on the shelf.

Cheers,

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)