Korg PA4X

[Rogertech]

I'm fascinated by this peculiarity. Wanting to record my playing and send it to my friends I play in Record mode and then save direct to a USB memory stick. When I then play the recording back on my laptop I find that my 90 seconds of playing has become 6 minutes with around four repeats of what I have played on the file in my USB stick. I guess it must be some setting that I have not yet discovered...any ideas? Many thanks in advance.