: This is the most direct software equivalent. Since the X5 was essentially an updated, sequencer-less version of the M1 architecture, the M1 VST covers the vast majority of the X5's core "bread and butter" sounds. It includes all the PCM data from the original M1 and its expansion cards, providing a richer experience than the budget-oriented X5 hardware. Korg TRITON VST
If Korg released a "Korg X5 VST" tomorrow, priced at $29.99, it would sell more units than the Opsix plugin. The desire for "cheap, old digital" is currently outpacing the desire for "expensive, analog." korg x5 vst
: You can use the Korg Sound Editor to program your hardware directly from your PC. Note that older 16-bit editors may require a compatibility layer like winevdm to run on modern 64-bit Windows. : This is the most direct software equivalent