Some 2Gb cards work but the KN7000 (and KN2600) was designed for 1Gb maximum. The 2Gb cards actually work sort of "by accident" and the keyboard will only use 1Gb-worth of space on them.
Larger ones won't work at all. Any card that isn't SD-Secure won't work at all.
Most of mine are 128mb, I find them to be faster than larger cards. Might be my imagination though, or it might be that I put more data on larger cards.
I use 1Gb or 512mb cards when I'm working with SD Audio.
I know that some people swear by 2Gb cards but I've had two corrupted 2Gb cards in the past so I simply don't use them. Maybe I made some mistakes, I don't know, but I don't risk using them anymore.
Edited by designserve (12/13/15 03:33 PM)