I don't know, it works fine on my computer. I have the E-Mu XMIDI 2x2 USB interface on one computer and the E-Mu XMIDI 1x1 on the other, latest drivers, and both work fine with the Ketron SD2. Make sure your USB interface has updated drivers - we went through this awhile back with the same E-Mu interface, and the newest drivers solved the problem. I'm pretty sure some other folks are running Win7-64 with the Ketron as well.

To quote Mac (and I'm a believer now based on my previous experience with the E-Mu drivers)...

Drivers, Drivers, Drivers...


John

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