Documents and Manuals
User Guide (English)
User Guide (Japanese)
Addendum v1.45 (English)
Addendum v1.41 (English)
Addendum v1.41 (Japanese)
Addendum v1.40 (English)
Addendum v1.20 (English)
Addendum v1.20 (Japanese)
MIDI SysEx Specification
Memory (RAM) and Internal Drive (IDE) Installation Guide
IB-4D (Z4 SPDIF) Installation Guide
Z4 & Z8 Service Manual and Schematics
MPC4000 Service Manual and Schematics
Note: The MPC4000 has many similarities with the Z-series, so its service manual has also been included here.
Operating System Firmware (OS Updates)
v1.45, v1.41, v1.40, v1.30, v1.27, v1.25, v1.15, v1.10
OSLoader (Windows)
OSLoader (OSX)
OSLoader (OS9, classic Mac)
ak.Sys Software
ak.Sys v2.53 (Windows)
ak.Sys v2.60 (OSX)
ak.Sys v2.61 (OSX)
Z4/Z8 USB Drivers
ak.Sys v2.0 User Guide (English)
ak.Sys v2.0 User Guide (Japanese)
Sound Libraries
Factory Sound Library CD-ROM Patch List
808 (24-bit)
909 (24-bit)
Drums – Volume 1 (24-bit)
Drums – Volume 2 (24-bit)
Factory Sounds
Factory Sounds – Drums 1
Factory Sounds – Drums 2
Factory Sounds – Keyboards
Grand Piano
Synthy 1 and 2
