Mike,
The same drives work in both machines--they're identical. Just a standard high density floppy drive that you can buy in any computer store for $15 to $20 U.S.. Nothing special or unique about the drive.
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)