The VH2 is a great improvement over Yamaha's early attempts, but I've found that any more than one harmony really taxes the system in the 950 ... maybe its just the way I sing, or the strength of the signal, but if you don't use the on-board gate and limiter it breaks up far too easily for my taste, and I just don't care for the sound with the processing ON ... I know, I know ... I'm extra finiky. As a straight vocal preamp ... it sounds great ... it's just the harmonies that perform a bit awkwardly for my taste. Glad you're getting good results Joe.