Hi,

If you want to write audio to the SD card you have to use a Panasonic Sd card writer and these are USB 1.1 (so are the KN keyboards) - so pretty slow. The speed of the card will be governed down to the speed of the writer, so there isn't much point in having a fast card.

If you are just moving MIDI stuff any reader/writer will do and these operations are smaller/faster anyway, so again a slower card will do.

I have a 512MB card with 137 audio files between 1 min. and 13 min. long on it and 200 or so MIDI files. The card is 80% full so I can fit masses more MIDI files if I need to.

Next stop, a cheap I gig SD card I think!

Cheers,

s.