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Akai S900/S950 WAV File Uploader

(by Discrete-Time Systems)


(Designed for Windows but will run on a Mac using Oracle's VirtualBox...)

Download 1.84 (requires usb rs232 interface) (November 28, 2017): Click Here

Freeware for most Windows versions that allows you to send WAV files from your computer to an Akai S900/S950 MIDI digital sampler (no other models are supported).  Can send WAV files, either mono or stereo, left or right channel, from 8-64 bits.  S950rs.exe is RS-232 only and does not support MIDI at this time!  Sample-transfer speeds up to 57600 baud (using a USB cable with a Prolific chipset, running Windows XP in Oracle VirtualBox on Apple Mac Sierra 10.12.6). 

(please email dxzl@live.com with feedback)

You will need a USB to DB-9 male cable: DTECH 10 Feet USB 2.0 to RS232 DB9 Serial Port Adapter Cable with FTDI Chipset Supports Windows 10 8 7 and Mac Linux.  and a DB-9 female to DB-25 male adaptor (you need one without hex nuts or they get in the way): DB9 Female to DB25 Male, Adapter, (Serial Port) Molded


S950-Midi, Experimental 1.84 (November 28, 2017): Click Here

Source-Code For RAD Studio 10.2: Here Experimental version source-code: Here

RS232 Drawing and Pinout: Click Here


Akai S900/S950 MIDI SysEx Documentation

Akai Sampler Disk And File Formats

Documentation and other related programs

Akai S900/S950 Midi Controller Messages

Akai S900/S950 System Exclusive Specification

Akai S950 Manual

WavAkai98 (program to send wav files to all S-Series Akai samplers via Midi, unzip folder to Windows desktop and double-click Wav_Akai.exe to run)



Bugs fixed:

(11/27/17) You can now select or drag/drop multiple files. A failed packet transmit now retries two more times.

(1/21/17) Timing fixed for sending multiple programs to machine from .PRG file (Many thanks to Oliver Tann for testing).

(9/29/16) Updated to fix uninitialized sample parameters and header array problem.

(9/10/2016) Fixed problems with reading some WAV files (thanks to Oliver for sending me sample files!). Also added drag drop to send a file and a combo-box to allow baud-rate selection.

(8/9/2008) Update e-mail address (dxzl@live.com)

(6/25/2008) Added more info in Help.

(4/19/2008) Original post required a special dll and would not run... fixed. Added support for sending either channel of a stereo sample. Added ability to send WAV of 8-64 bits.