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HomepageKeyboardsSynths › Roland JX-03
Roland JX-03

The Roland Boutique JX-03 module continues the legacy of the JX-3P synth. The original button-driven interfaces are designed to give immediate access to preset sounds.

It was actually highly programmable though, especially when used with the optional PG-200 controller that added 24 rotary knobs for instant sonic sculpting. The limited-edition 4-voice JX-03 inherits all 24 knobs from the PG-200, as well as the distinctive JX tonal character. We've also added some extras not present in the JX-3P including new waveforms, expanded DCO range and cross modulation options. You can even slide the JX-03 into the optional K-25m keyboard unit for a self-contained, go-anywhere synth experience.

JX-3P Sound. Built-In Controller.
Often described as a forgotten classic, the JX-3P was all about instant access to big sounds, with a simple button-driven interface rather than lots of knobs and sliders. When used with the optional PG-200 controller however, the power of the highly programmable engine was revealed. The new JX-03 module recreates the panel layout of the PG-200 - including all 24 knobs - giving direct and instant access to the versatile synth architecture.

Additional Sound-Shaping Options
Like the other members of the Roland Boutique range, we also added a few subtle improvements that weren't found on the original models. The JX-03 benefits from extra waveforms and extended range for both DCOs as well as extra waveforms for the LFO. The second DCO also gets extra cross modulation options. These additions further expand the sound creation possibilities of the battle-tested JX engine.

Develop Your Ideas with A 16-Step Sequencer
The onboard 16-step sequencer is a sonic scratchpad that lets you try out new ideas without bringing lots of gear - it can even be used without a keyboard. And if there's no keyboard connected, the ribbon controller lets you preview the sound, making it an ideal way to program patches quickly and easily.

Works With Optional K-25m Keyboard Unit
The JX-03 works especially well with the K-25m, an optional 25-key velocity sensitive keyboard that takes your music making to the next level. Once docked in the keyboard, the module's front panel can be tilted for convenient access to the knobs and sliders.

Chain Mode
The original JX-3P was a powerful synth featuring 2 digitally controlled oscillators for each of its 6 voices. The JX-03 features a chain mode that allows you to connect two JX-03 modules using the MIDI ports and create one, 8-voice synthesizer. Adding additional modules adds another 4 voices of polyphony with each module. This is especially great when controlling the JX-03 from a larger external keyboard. You can even edit the sound from the master module and control both units. Great for realtime filter sweeps and envelope adjustments.

Battery or USB Bus Power
Some of the best music is made away from the studio, so the module runs on 4 x AA batteries, ready for when inspiration strikes. Alternatively, you can power the JX-03 via USB bus power.

USB Audio Interface for Direct Recording into Your DAW
The built-in USB port also functions as a high-quality 24bit, 44.1 kHz audio interface, for a fast, simple and reliable way of recording directly to your DAW application. You can keep your favorite patches and sequencer patterns safe too, via the USB data backup function.
  • Ultra-compact recreation of the iconic JX-3P synthesizer
  • Retains the feel, sound character and user interface of the original
  • Front panel includes all 24 knobs from the original PG-200 controller
  • Adds several updates not found on the original JX-3P, including extra waveforms for the LFO and both DCOs, along with extended DCO range
  • Chain mode allows two JX-03 to function as one 8-voice module
  • Highly portable for mobile music making
  • High-quality construction with metal front panel
  • Dual ribbon controllers for pitch bend, modulation, and sound preview
  • Battery-operated (4xAA) or USB powered
  • 24 bit / 44.1 kHz stereo IN/OUT USB audio interface
  • Built-in 0.5W mini-speaker for instant enjoyment
  • Compatible with optional K-25m mini-keyboard
  • Specifications
    Maximum Polyphony:
    4 voices

    User Memory:

    Preset Memory:

    VOLUME knob
    Ribbon controllers 1, 2

    DCO-1 Section
    RANGE select knob
    WAVE FORM select knob
    FREQ MOD LFO switch
    FREQ MOD ENV switch

    DCO-2 Section
    RANGE select knob
    WAVE FORM select knob
    CROSS MOD select knob
    TUNE knob
    FINE TUNE knob
    FREQ MOD LFO switch
    FREQ MOD ENV switch
    LFO DEPTH knob
    ENV DEPTH knob
    Polarity switch

    VCF Section
    SOURCE MIX knob
    HPF CUTOFF knob
    LPF CUTOFF knob
    RESONANCE knob
    LFO MOD knob
    ENV MOD knob
    ENV MOD polarity switch

    VCA Section
    MODE switch
    LEVEL knob

    LFO Section
    WAVE FORM select knob
    DELAY TIME knob
    RATE knob

    ENV Section
    ATTACK TIME knob
    DECAY TIME knob

    CHORUS Section
    CHORUS button

    BANK A, B, C buttons
    PATCH NUMBER 1-16 buttons
    MANUAL button

    Power switch


    Step Sequencer:
    16 step
    16 pattern

    Nominal Input Level:
    INPUT jack: -0 dBu

    PHONES jack: Stereo miniature phone type
    OUTPUT jack: Stereo miniature phone type
    INPUT jack: Stereo miniature phone type
    MIDI (IN, OUT) connectors
    USB port: MicroB type (Audio, MIDI)

    Power Supply:
    Rechargeable Ni-MH battery (AA, HR6) x 4
    Alkaline battery (AA, LR6) x 4
    USB Bus power

    Current Draw:
    500mA (USB Bus power)

    Expected battery life under continuous use:
    Rechargeable Ni-MH battery: Approx. 6 hours
    * This can vary depending on the specifications of the batteries, capacity of the batteries, and the conditions of use.

    Owner's Manual
    Alkaline battery (AA, LR6) x 4

    Options (sold separately):
    Keyboard unit: K-25m

    Width: 300 mm, 11-13/16 inches
    Depth: 128 mm, 5-1/16 inches
    Height: 46 mm, 1-13/16 inches
    Weight: 950 g, 2 lbs 2 oz
    Free shipping in Canada. Conditions
    Additional information
    For more information about the JX-03, please visit the website of Roland
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