DOWNLOADS for Kurzweil SP4 and SPS4 Keyboard Sound Editor

Kurzweil SP4 Piano SoundEditor Demo Download:

Windows PC:

SP4 editor setup  Version 2.1.0

Mac OS X : 

SP4 editor Installer  Version 2.1.0d


Important note: The editor requires the PC3 OS v 2.10 or later.


The latest SP4 OS updates:



PC3 SoundEditor User Guide English PDF



To order the registration key click here.






To load PC3LE Program Library file click on the LIBRARIAN button. In the Library window select "Load Library File" from the Librarian menu or use LOAD button. All programs will be loaded to their their own category slots. You can audition them all by simply selecting them from category lists. You can browse through all programs and they will be loaded to temporary buffers and nothing will be overwritten in your SP4 ROM banks.


To write program that you want to use, select a location in Program Banks and click on the Arrow button or use copy/paste functions. You can write program above 192 but then you will be able to access them only with the editor or other MIDI programs like Cubase, Live, Logic Pro but not from your SP4 front panel.


Soon we will make all other objects available like songs, patterns and etc. so you will be able create and play arps and riffs.

© 2014 Young Chang Co., Ltd.

Kurzweil and SP$ are trademarks of Young Chang Co., Ltd.

Developed by  SOUNDTOWER  INC.


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