For Sale: OpenBCI Ultracortex Mark IV 16-Ch EEG + Rare ThinkPulse Active Electrodes Unused

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OpenBCI Ultracortex Mark IV 16‑Channel EEG System + Rare ThinkPulse Active Electrodes – Pre-Wired, Unused Turn-Key Kit

Ebay Listing: https://ebay.io/m/Qe0QgS

Price

  • Asking Price: $4,500 USD

  • Offers: Open to reasonable offers.

Overview

Up for sale is a complete, pristine, and entirely unused OpenBCI Ultracortex Mark IV 16-channel EEG system, upgraded with the premium ThinkPulse Active Electrode System.

Unlike a standard unassembled box of components, this headset has been professionally configured and is fully pre-wired for the active electrode system. The heavy-duty active wiring harness is already integrated into the headset frame, and a full arrangement of active sensor tips is pre-installed.

Additionally, because the ThinkPulse active dry electrode kits are no longer being manufactured, finding an unused, complete, 16-channel turn-key active system like this is exceptionally rare. This kit was acquired for a professional human-performance research project that shifted focus prior to launch. It has never seen field or clinical use, and has been meticulously stored in a climate-controlled, smoke-free office environment.

What’s Included (The Complete Package)

  • Ultracortex Mark IV Headset (Fully Pre-Wired Active Setup): Assembled white 3D-printed interlocking frame, completely wired with the premium, low-noise gray active electrode harness.

  • Pre-Installed ThinkPulse Active Tips: A mix of polymeric flat tips (optimized for bare skin/forehead positions) and pronged/comb tips (designed to clear dense hair) are already screwed into the active nodes.

  • Extra/Spare Active Hardware: Two sealed silver anti-static bags containing an abundant supply of additional, unused ThinkPulse active electrode tips (both flat and comb styles) for future replacements or layout adjustments.

  • Complete Standalone Passive Backup Set: A separate, complete bundle of original blue threaded node inserts, standalone tension springs, white plastic locking C-clips, and standard thin passive wiring leads. This gives you a full passive kit to keep as a backup or alternative build.

  • OpenBCI Cyton Board + Daisy Module Assembly: Pre-stacked and mounted directly to the rear of the headset, unlocking a full 16 channels of synchronous, high-fidelity wireless biosensing.

  • 3D-Printed Board Enclosures: Both halves of the white protective snap-fit shell for the Cyton/Daisy block (unmounted, ready for your final closure).

  • Connectivity & Power:

    • 1x OpenBCI Wireless USB Bluetooth Dongle (for low-latency PC communication).

    • 1x Rechargeable Lithium Polymer (LiPo) 3.7V 500mAh battery pack with JST connector.

    • 1x Ear Clip Electrode (dedicated grounding/reference cable with integrated clip).

    • 1x Sealed ribbon pack of multi-color Dupont jumper wires.

  • Original Factory Documentation: OpenBCI welcome inserts, a mount rotation guide, and hardware safety advisories.

System Highlights & Rarity Value

  • Discontinued Active Technology: The ThinkPulse system (engineered by Conscious Labs for OpenBCI) is highly sought after by BCI developers for its drastically lower impedance and vastly superior signal-to-noise ratio over traditional passive dry sensors. Because it is no longer in production, this complete kit represents a rare opportunity to acquire a pristine setup.

  • True 16-Channel Sync: Seamless wireless EEG acquisition using the combined power of the stacked Cyton + Daisy hardware architecture.

  • Open Software Ecosystem: Fully compatible out-of-the-box with the OpenBCI GUI, BrainFlow, Python, MATLAB, C++, and standard Lab Streaming Layer (LSL) protocols.

Condition

  • Status: Open-Box / Entirely Unused.

  • Physical Condition: Flawless. Zero pin fatigue, zero structural wear on the 3D framework, and all extra components remain sealed in their anti-static packaging.

Shipping & Logistics

  • Shipping: Securely ships anywhere at the buyer’s expense. Shipping cost is an estimate for US domestic ground, custom estimates available upon request. Shipment will be fully insured for the final sale value and pickup-signature required.

  • Local Pickup: Available for local pickup in the Southern California area.

  • Packaging: Will be professionally cushioned with anti-static wrap and heavy-duty padding.

  • Payment: Handled securely via standard marketplace-approved methods (PayPal or platform-managed payments).

Contact

Please reach out if you have any specific questions.

Serious inquiries only, please.