Hello,
The X1 sampler does not read other manufacturers samples.
The X1 will sample up to 7 seconds . The samples are stored directly to the hard drive or disk and call be accessed via user voices.
You could sample sounds from other keyboards into the X1. However the X1 can not convert Akai or Kurzweil samples. If you have other questions please feel free to email. oneils4@home.com DanO