***B-STOCK: Item refurbished, repaired and in perfect working order.*** A true MIDI powerhouse, based around a 128-pad matrix and 16-track MIDI sequencer with slick programming workflow and Ableton-style pattern mode for live performance. *** Firmware update- April 2026 *** Squarp are excited to announce that hapaxOS 3.0 is now available! This major update introduces powerful new features, including MPE support and Virtual Cables, along with a range of bug fixes and performance improvements. To fully support the complexity and data demands of MPE, Squarp have deeply reworked the system architecture. This is why Squarp have moved to version 3.00: it marks a significant milestone for Hapax. The result is a more robust and reliable experience than ever before, including when working with classic Poly tracks. New features: MPE support greatly improved. Added MPE zones configuration for the track output. You can choose between Lower Zone (channels 2-15, channel 1 is the master) and Upper Zone (channels 15-1 inverted, channel 16 is the master). Live Mode MPE: now, when playing the 128 pads, Hapax transmits the Aftertouch (Pressure), CC74 (Timbre), and Pitchbend. Thanks to the left screen, you can set the default value of the Pressure and Timbre. Step Mode MPE: when adding notes in Step Mode, you can set the initial values of Pressure, Timbre, and Pitchbend for each note. Step Mode MPE: you can now display and offset the Pressure, Timbre, and Pitchbend curves of a recorded MPE note. Multi-Track MPE on the same output: the new routing system prevents conflicts, allowing up to 4 MPE tracks to share the same output. MPE & Setting Midi In ? Active Track Channel: Added "ALL (MPE CONTROL)" to control the active track with an MPE controller, regardless of track type (MPE, Poly, or Drum). MPE: added option in 2ND+Track to send MCM (MPE Configuration Message, MIDI messages that tells the connected MPE device how the MPE zones are configured). Virtual Cables: The USB Device port and the USB Host port now appears as 16 independent MIDI ports (16 channels each) to your computer or other device. This greatly expands routing possibilities, supports multiple MPE controllers or synths simultaneously, and effectively extends Hapax's available MIDI outputs. To assign the MIDI port of an output (or input), Hold Track, choose USB Host or USB Device, then hold the encoder and scroll through the 16 available Virtual Cables. Virtual Cables: Input and output ports can be defined directly in Instrument Definition files (instead of "USBD" or "USBH", use "USBDx" or "USBHx" where x is between 1 and 16). Virtual Cables & Setting Sync Out, USB Device / Host: Clock and Transport messages can now be sent to virtual ports 2-16. And more- head to for more information Supplier's Notes: Professional standalone sequencer Genuine centerpiece of a setup, it offers every tool needed to compose songs in the studio and perform them on stage. From vintage to modern synths, from modular systems to your favourite DAW, Hapax can sequence and synchronize all your gear, while bringing you carefully crafted tools, designed for maximizing creativity. The midi powerhouse. Up to a million notes and events 16 tracks per project, 8 patterns per track. Thanks to its dual-processor architecture, Hapax can record and transform tremendous amounts of data in no time, without a hitch. Express yourself. MPE compatibility Hapax is the first hardware sequencer that fully supports MIDI Polyphonic Expression. Record the finest gestures, slides and articulations of your playing, without compromising quality. Around the clock performance. Dual-project architecture Hapax can handle two separate and independent projects, that can be played simultaneously. This lets you compose or load an entire project while the first one is already playing, enabling endless sets and seamless transitions. Dawless is more. Hapax offers broad connectivity options for perfect integration in any setup. Adaptive workflow. Several ways to write music Writing a melody: use a polyphonic or MPE track and take advantage of the advanced step sequencer to quickly lay down notes or edit your live recording. Composing a beat: control up to 8 different instruments with a single track. The drum sequencer is tailored for very easy rhythm writing and jamming. Real-time midi effects. Bring your synths to life Hapax embeds multiple real-time, polyphonic, non-destructive midi effects, as well as project-wide assignable LFOs. Each parameter of these effects can be automated in the dedicated mode, and processed in the mod matrix, which provides even more ways of routing and modulating. Powerful composition tools. Algorithms Powerful tools for offline note transformation and generation, right at your fingertips. Harmonically invert your motive, generate a controlled-random counter-melody, slowly ramp up the velocities, emphasize every fifth 8th note... Hi-res recording Hit the red button, and record from the encoders and 128 pads of Hapax, external midi instruments (included MPE controllers) or any incoming analogue signal, at a high resolution of 192 ppqn. Looper style recording, count-down and metronome options, punch-in mode, you'll certainly find the options that best suit your workflow. Time elasticity Each track has an elasticity value which changes its playback speed, expressed in percentage of BPM. Quickly double or halve the speed of a track, or create slightly shifted tracks that will slowly drift out of phase with each other. Fluid editing Using hardware should never get in the way of creative flow. The undo/redo button lets you go back in time as needed, thanks to its extensive history. Additionally, the snapshot function enables you to save the state of a pattern and recall it with a single press. Together with dedicated copy, paste and delete buttons, Hapax offers a complete toolbox for the prompt editing of your tracks. Harmony, simplified For fast and intuitive chord building, the chord live mode brings harmonic capabilities to anyone, with or without deep theoretical knowledge. With its colourful interface, the chord mode displays a synesthetic melding of hearing, vision and touch. Simple by design. Trimmed to perfection Squarp designed Hapax from the ground up, deconstructing everything you thought you knew about sequencing- aiming for a high-end product, with dual arm processors for computation power and a rugged yet minimalist housing. As music-making should remain an enjoyable process, dedicated buttons were over key combinations and imagined a clear-cut interface as well as a simple architecture. Squarp have striven to minimize the importance of screens for live performing, but the dual grayscale display helps keeping track of things in a studio context. Hapaxos Evolving firmware. The Hapax Operating System has been written with extra care, prioritizing stable and fast operations. New features and parameters will be added regularly. Specifications Model name: Hapax Hardware: 128 RGB MATRIX pads 52 clic pads 9 sturd UPDATE 19/06/2026: Squarp heave released firmware update 3.10 for the Hapax, with a host of fixes and new features: - Expanded Step Drum: Tracks now support up to 16 drum rows (press up or down to scroll through the 2 pages). Instruments Definitions and Midi Drums Import/Export also support the 16 lanes of drums. - Live Drum Layouts: Added three new pad layouts (8, 4 and 1-Velocity, in addition to 16-Velocity). Accessible via Settings > Misc > Live Drum Pads. - New Effect - Spring: A versatile new slew limiter featuring a resonant/oscillating mode alongside a preshot feature. - Global LFO - Flat Waveform: You can now set Global LFO A or B to a static "Flat" waveform (0% to 100%). This is especially useful for creating custom macros routed through the modMatrix. - Effect Filter - Velocity Range: Added Velocity Min and Velocity Max parameters, allowing you to selectively filter notes based on their velocity. - Chance FX - "Use Velocity": Added a new discoverable parameter where note velocity scales the chance percentage to calculate the final chance amount. - Autom Mode - Ping Automation MIDI message for easier external MIDI Learn (select the lane, hold 2ND and press the Ping encoder). - Autom Mode - Rapid Event Creation: Holding an empty pad while rotating the Value encoder now instantly creates a note directly on that step. - Autom Mode - Row Values: You can now hold a row (the [?] pads) to configure its default value. Any new event added to this row will automatically inherit this value. - Effect Automation Recording: When recording is enabled, rotating an FX parameter encoder (in Effects Mode) will now actively create and record events automation. - Quick Effect Automation Lane Creation: In Effect mode, holding REC and pressing (or rotating) an FX parameter encoder will instantly generate an empty automation lane for that parameter (and enter the Autom Mode). Bug fixes - Step Mode: Fixed a bug that made it impossible to delete notes when the HOLD STEP CAPTURE setting was turned OFF. - Autom Mode: Addressed an issue where CC events were not being sent if interpolation was disabled and values hadn't changed. Every event is now reliably transmitted. - CV/Gate Outputs: Fixed an issue where Gate Retrig failed to trigger when two notes were adjacent but not overlapping. - Arpoly effect: Fixed possible stuck notes. - Hardware: Fixed an issue where the OLED screens would remain permanently OFF on certain units. User Interface: - UI Polish: redesigned some interface elements for better clarity and aesthetics. - Added smooth feedback for various effects.