And the SD9 loads/read/streams from an internal soundboard/card,the SSD is for loading/saving your SMF,MP3,WAV,styles,gm/presetsounds etc,so much more stable than the Audya,who streams from the HD/SSD.
Its very important also!!
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Style Producer
Ketron Event, Ketron Audya 76, Audya 5, SD9, SD1,Yamaha Genos, Korg Pa3x, microarranger, Roland Fantom G6, V-Synth XT, XV-5080, SH201, D-50, Novation KS4, Dave Smith Evolver