Additionally, the X3 features two combination banks (A and B) that allow up to eight programs to be layered and assigned to specific keyboard zones.

[2] The X3's 16-track sequencer can handle up to 32,000 notes and supports storage of ten songs and 100 patterns simultaneously.

[2] The Korg X3R, released as the rack-mounted counterpart to the X3 synthesizer, houses all the same features within a 19-inch rack format.

[3][4] The 05R/W was a more compact module that retained the X3's core features while omitting the sequencer and reducing the number of patches.

[5] Additionally, the X5 was developed using the X3's synthesis engine but lacked the floppy drive and sequencer of its predecessor.