Looks like the replacement of the M-50 series. Still 120 notes of polyphony. I'm sure the big combi sounds will loose notes when sustained.
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~Johnathan
"The Shueys"
www.shueymusic.com
Yamaha Genos - RCF M20x - RCF HD10A (Stereo) - Jupiter Pocket Trumpet - Sennheiser e935 - Neumann KMS-104 plus-N