🙋🏻‍♂️ Welcome to SynthFreak!

Hey and thank you for visiting my shop and for your interest in this synthesizer! Every instrument in my shop comes from my private collection and is treated with the highest level of care. My mission is simple: you receive a vintage instrument that performs flawlessly, not a "fixer-upper."

Before any item is listed, it undergoes a rigorous, multi-stage inspection by our technician. I know my prices reflect a premium compared to "as-is" listings, but this is a deliberate choice. When you buy from me, you are investing in a fully verified, professionally serviced, and risk-free collector’s item that is ready for the studio the moment you plug it in. You avoid the hidden repair bills and frustration that often accompany cheaper, unverified gear.

💎 Why You Invest in Quality

My pricing directly reflects the extensive time, technical expertise, and premium materials required to deliver an investment-grade instrument. Here is exactly what is included in your purchase:

• 🛡️ Double Technical Verification: Every instrument undergoes a comprehensive checkup before being listed. To guarantee perfection, the entire unit is tested again right before it is packed. Any component replacement, calibration, or display upgrade is handled by specialists so you receive a turn-key, flawless instrument.
• 📦 Premium Custom Packaging: Vintage electronics are fragile and irreplaceable. To ensure 100% safety during international transit, we do not use standard shipping methods. We spend hours custom-building heavy-duty, multi-layered packaging or bespoke wooden crates. This professional-grade preparation guarantees that your investment arrives in the exact condition described.
• 🚀 Worldwide Fastest FREE Shipping: I believe in delivering excellence to your doorstep without extra costs. Every purchase includes expedited, fully insured worldwide shipping at no additional charge, ensuring your instrument arrives as quickly and safely as possible.
• ⚡ Power & Global Connectivity: My instruments are configured for EU 230V. If requested, I can perform a free internal voltage conversion where technically possible. If not, I recommend a high-quality external step-up transformer (approx. $50). This is the preferred, risk-free solution for 90% of my international customers, allowing you to power multiple EU-spec devices simultaneously without compromise.
• 📑 Customs & Import Optimization: International shipping often brings unexpected financial burdens. Our dedicated logistics team reviews each shipment individually to prepare customs declarations strategically. This compliant, professional approach helps minimize or entirely avoid unnecessary import fees and taxes for you.
• ✅ Transparency & Peace of Mind: I document the entire process and prioritize full professional transparency. You avoid the hidden risks, dirty interiors, and immediate repair costs that often come with cheaper 'as-is' listings from private sellers.

Enjoy reading the description.

🎹 Information about the Item for Sale

I am offering the Roland JX-10, also famously known as the "Super JX". Released in 1986, this magnificent instrument represents the absolute peak of Roland’s classic, programmable DCO analog synthesis line. It is effectively two complete Roland JX-8P engines crammed into one sleek, road-ready metal chassis with a premium 76-note keyboard.

The Super JX is legendary for its massive, lush, and cinematic soundscapes. By layering or splitting its two internal sound engines, it creates some of the deepest analog strings, rich brass sections, evolving pads, and complex textures ever produced by a vintage polyphonic synthesizer. It delivers that definitive premium 80s analog warmth with massive presence.

Technically, this Roland JX-10 is in excellent operational condition. The internal electronics have been carefully checked, and the iconic fluorescent display is crisp and fully readable. All 76 velocity and aftertouch-sensitive keys respond perfectly, and the extensive back-panel routing options work exactly as they should. Optically, the synthesizer is very well-preserved, showing only normal, light signs of wear consistent with its vintage age, but nothing that detracts from its commanding studio appearance.

Please note: This listing includes the Roland JX-10 and the power cable, No Manuals!

⚙️ Specifications

• Type: Flagship Polyphonic Analog Synthesizer
• Manufacturer: Roland
• Model: JX-10 (Super JX)
• Era: Mid-1980s (Introduced 1986)
• Keyboard: 76 weighted keys with Velocity and Channel Aftertouch
• Polyphony: 12 Voices (2 DCOs per voice, total of 24 oscillators)
• Architecture: Dual-engine architecture (Whole, Split, or Touch-Layer modes)
• Filters: Classic Roland 24dB/octave low-pass resonant filters (IR3109) plus static high-pass filters
• Effects: Built-in legendary analog Stereo Chorus engine
• Memory: Massive internal patch memory and cartridge slot capability
• Connectivity: Stereo outputs, individual engine outputs, MIDI In/Out/Thru, and programmer input
• Sound Character: Deep, majestic, velvety warm, and brilliantly expansive analog textures

📹 Video Before & After Purchase

Any interested buyer is welcome to request a video demonstration of the instrument.

Additionally, each buyer receives a detailed functional check video before shipping, so you can see and hear your Roland JX-10 running through its voice architectures, filter sweeps, and keybed performance. If any issue is discovered during this final inspection, it is immediately corrected by our technician.

💲 Prices

It is very important that my instruments go into good hands.

• Price proposals are welcome
• If you are seriously interested, feel free to make an offer
• Reasonable proposals will always be considered

⚠️ Information

• All instruments come from my private collection
• The collection is continuously updated
• Each instrument is cleaned, tested, and carefully prepared for sale
• Instruments are protected against dust and damage

📦 Secure Packaging

• The instrument is wrapped in multiple protective layers for safe transport
• Special focus is given to protecting the sleek 76-note keybed and the delicate fluorescent display layout
• Fully insured shipping

💢 Shipping

• Best, fastest, and safest shipping option selected depending on destination
• Fully insured shipping
• Export documentation included if required for international shipping

⚡ Power and Connection

• Standard power connection (EU voltage configuration, non-EU buyers please use an appropriate high-quality transformer/adapter if required).

💯 Your Advantages

✅ Professionally checked instruments

✅ Tested and cleaned

✅ Massive 12-voice dual-engine architecture

✅ Worldwide insured shipping

✅ Export documents included

✅ Verified seller

✅ Secure payment

✅ Animal-Free & Non-Smoking Household

⛔ What are you waiting for!?

The Roland JX-10 is an absolute behemoth of vintage analog synthesis. Protected by professional custom wooden crating and palletized transport, this pristine Super JX is ready to step up and bring an unshakeable analog foundation to your studio production! 😉