Yamaha Mu-90 Mu90 Sound Module Ancestor of Motif Sound The MU90 Tone Generator with multi-purpose functionality, simple operation and convenience. Dimensions (W x D x H) 220 x 210 x 44 mm Weight 1.36 kg Tone Generation Method AWM2 Maximum Simultaneous Polyphony 64 notes Sound Module Mode XG, TG300B, C/M, Performance Internal Voices/Program Structure Normal Programs; Total Voices: 779; XG Mode: 586; TG300B Mode: 614; C/M Mode: 128 (Parts 1-9), 64 (Parts 11-16) Drum Programs Total Programs: 30; XG Mode: 20; TG300B Mode: 10; C/M Mode: 1 Performance Programs Up to 4 voices, including effect settings, are stored in each Performance. Effects 6 independent effects: Reverb (12 types), Chorus (14 types), Variation (62 types), Insertion 1, 2 (43 types each), EQ (4 types)