hat are the differences between the different K2000 OS versions?

V1 - Base operating system: the wonders of VAST.

1.0 - The original

1.28, 1.29, 1.3 - New factory programs, support for SMDI and more external
SCSI devices (e.g., flopticals), variety of minor bug fixes, several new
features

V2.0, 2.07, 2.08J - Added graphic sample editing, looping utilities, DSP
functions like time compression and expansion, resampling, trigger on
release, and better support for loading samples of other manufacturers

V3 Adds real sequencer, hierarchical file system with capability to load and
save individual objects, MACRO facility for load operations, improved SCSI
performance, compatibility with DOS-format SCSI drives, plus a range of
other operating system improvements.

Since its release, Version 3 is shipped in all K2000s. An upgrade is
available from Kurzweil Authorized Dealers.