WORKING CONDITION: Excellent. All modes, modulation parameters, and the sequencer operate perfectly. There are no working issues with this synth or its keyboard. 

PHYSICAL CONDITION: Excellent. The bundle is in excellent condition. All knobs, mod sliders, keys, iO jacks, and switches are in top form.

INVENTORY #59852

BRAND: Roland 

MODEL: JX-03 & K-25m 

FUNCTION: Keyboard Synthesizer

PRODUCT DESCRIPTION:  This listing is for a Roland JX-03 & K-25m Mini Keyboard Dock 4 Voice Synthesizer. 

The Roland Boutique JX-03 is a compact, virtual analog sound module that serves as a modern recreation of the iconic 1983 Roland JX-3P synthesizer. While it is a standalone module, it is frequently paired with the optional Roland K-25m mini-keyboard dock to transform it into a highly portable, fully integrated hardware synthesizer. The Roland Boutique K-25M Keyboard Unit is a 25-key, velocity-sensitive keyboard controller specifically designed to serve as an integrated dock for the Roland Boutique series modules. It physically transforms your compact desktop synthesizer modules into highly portable, fully functional hardware synths.

SPECS:

• Serial #: C6L2363
• JX-03 Specs:
  • Full Hands-On Control: Unlike the original JX-3P (which required a separate, rare PG-200 unit for knob-tweaking), the JX-03 builds all 24 knobs and controls directly into its metal front panel for instant sound shaping. 
  • Expanded Sound Engine: It upgrades the original architecture by adding extra waveforms for both DCOs and the LFO, alongside expanded cross-modulation options.
  • Polyphony & Chain Mode: The unit natively supports 4-voice polyphony. If you need more voice count, you can use its built-in Chain Mode to link two JX-03 units via MIDI to function as a single 8-voice synthesizer.
  • On-the-Go Production: It features an integrated 16-step sequencer, a built-in 0.5W mini-speaker, and can be powered entirely by USB bus power or 4 AA batteries. 
  • USB Audio Interface: It operates as a 24-bit/44.1 kHz stereo USB audio/MIDI interface, allowing you to record directly into your DAW without an external audio interface.
• K-25m Specs:
  • Direct Module Docking: The keyboard functions as a custom dock. Your Boutique module connects directly using an included 16-pin flat ribbon cable tucked neatly inside the unit.
  • Adjustable Viewing Angles: Features a built-in three-position stand. You can leave the synth module completely flat or tilt it up at two different angled positions for easier viewing and sound programming.
  • Octave Range Shift: While the physical layout has 25 mini keys, it can shift from -4 to +5 octaves when used with a connected module to access full pitch registers.
  • Premium Metal Chassis: Built robustly with a high-quality metal frame to securely protect your synth modules when folded up.

ACCESSORIES INCLUDED: This item comes as seen in photos and does not include any accessories. Does not include a power adapter or any related cabling. 

UNPACKAGED WEIGHT: 4 lbs.

UNPACKAGED DIMENSIONS: 12" x 2" x 9"