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New Products from KeyboardPartner Are Here with the NEW HX3 Mrk5 with the 3.5 Real Organ Sound Engine!.

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Support and Downloads for KeyboardPartner


Current 3.5 (Mrk 5)
User Manuals
& All Documentation

WEB PAGE FOR ALL Mrk5, version 3.5 products

(Latest Firmware is 5.521 featuring the NEW CaM Rotor effect)

HX3 MIDI Implementation

USB Drivers - Install Before Using the Remote Software

Document Library

Current and Past Products


Online manuals and documentation on HX3.5 products - Current

Online manuals and documentation on HX3.4 products

Online manuals and documentation on our other products

KeyboardPartner Github Repository Current and archived firmware of all products, schematics and drawings, tools for download

KeyboardPartner Forum

KeyboardPartner HX3 Forum

Discussion with KeyboardPartner team and other HX3 users

Support Requests

Please direct your request via e-mail to Info (at) In case of technical issues please include detailed information on type of device, configuration, and firmware version.