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JoMoX | XBase 999


The XBASE 999 is a drum machine with 9 instruments. 4 of them are completely made up of advanced analog discrete circuitries and combine true analog sound with the advantage of full digital control of all parameters. The other 5 instruments are based on short 8 bit samples which are processed by an analog VCA envelope. They are of course also controllable in the digital domain. Thus they can be stored in memory and be remotely controlled by Midi.

In order to affect the analog sound production as little as possible, all D/A converters are specially adapted to the parameters and being integrated into the circuitry. By doing so, the parameter control is provided for each trigger almost without any delay – which makes the necessary technical efforts in the XBASE 999 quite big.

Additionally, the XBASE 999 has a great sounding stereo filter that allows for independent control of cutoff, Q and resonance. It is also controllable by Midi CC and can be sequenced by the internal sequencer with every of its parameters.

By using encoders instead of potentiometers annoying jumps of parameters belong to the past. Basically the editing of all instrument parameters is possible by the 16 encoders or by using the left / right cursor buttons and the data wheel.

The heart of a drum machine is of course the sequencer. The XBASE 999 has a classic step sequencer with step LEDs which also lets you edit various quantizers for each track and step with midi clock sync and shuffle mode options.

Furthermore, 4 additional programmable MIDI tracks can trigger external instruments. In Pattern Mode, the XBASE 999 can control all the sound settings for each step to obtain melodies and really freaky grooves. So, for instance, you can “abuse” the kick drum with long decay for creating a bass line due to it’s extremely flexible sound programming.

On the sample based instruments each step can trigger a different sample if you want to. Each sample based instrument contains 31 different samples. With XBASE 999 it is possible now to reload them into the internal flash memory by midi sample dump. A PC/MAC tool for a convenient download can be downloaded at
ModelXBase 999
Engine TypeHybrid
EngineDCO, PCM, sample
Voices (max)9
LFO2 Saw Up, Saw Down, Square, Triangle, Clocked, Freerun
Engine Detailed1, Pulse, Pulse Variable, ROM, Sample
Filter (VCF)1 Band Pass, High Pass, Low Pass, Notch, Resonance
Envelope (VCA)1 AD
Recording4 track
Key typeButtons
AudioStereo out + 9 individual outs and a stereo input.
Produced:2006 - 2013
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.


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