Version Releases

Trax turns Midivex into a drum machine. Pick a kit map for your hardware drum machine or a drum VST, generate a groove, then shape it live. It drives any MIDI drum machine or multitimbral synth in your rig.

• Generate a beat from a style and density, then push it with Variation, Cymbals and Percussion
• Per-step Velocity, Ratchet, Gate, Pitch, Octave, Chance, Timing and Length, not just on or off
• Up to eight patterns per beat (A to H), each with its own Fill, queued live at the bar
• Swing, accents and micro-timing across the whole beat or a single lane
• Built-in kit maps for General MIDI and many popular drum machines and drum VSTs
• Also ships as Miditrax, a standalone app. Your Midivex Pro licence includes it at no extra cost

New to Trax? The Trax setup guide walks through it step by step.

Every active device in a patch now has plus and minus steppers for Bank, Sub Bank and Program, so you can audition patches on your synth without diving into front-panel menus. The steppers are MIDI-mappable too.

Added the Roland JD-990 and JV-2080 to the synth preset database, bringing it to 30 supported devices with full patch names ready to recall.

Midivex remembers its window position and size between sessions, and reserves the extra room it needs automatically when you open Trax, so the grid always has space to breathe.

Engage Latch on any active device to play hands-free. Tap a note to play, tap the same note to stop, or switch to Hold to stack notes one after the other. Latch state is per-device and remembered in the patch.

• Lay down a sustained pad on one synth and play melody on top without a hand on the keyboard
• Latch a chord, switch chords cleanly with a single press (the previous chord releases)
• Hold mode stacks notes additively for evolving textures
• Per-device, so different synths in the same patch can be in different latch states

Got several synths with MIDI routed to one keyboard controller? Enable Spotlight in the Tools effect and your controller just sends MIDI to the highlighted synth. Highlight another synth to auto-switch to that route.

• Audition each synth in a multi-synth patch with one click, no muting or routing changes
• A sky-blue ring around the active target makes the current destination visible at a glance
• Latched notes on the previous target keep playing when you switch

Two new entries in the NI Layout’s voicing menu, alongside Classic, Wide, Cinematic, and Fifths.

• Barry Harris, the classic jazz tonic-6 / passing-diminished approach. Tonic-6 inversions on chord-tone degrees, symmetric diminished-7 on passing-tone degrees. Tonic flavour follows the active scale (major 6 in major and mixolydian, minor 6 in minor and dorian)
• Quartal, stacked diatonic fourths from the played note. Three voices by default for the canonical modal sound (think McCoy Tyner or So What). Diatonic 4ths, not forced perfect 4ths, so the voicing always sits in the active scale

The Chord effect’s modifiers stay in your chosen key automatically. Hold any modifier with any chord and it always sounds musical.

• The “7” picks the right seventh for the chord, major or minor
• The new “add6” gives the sixth that fits the scale
• “sus2” and “sus4” follow the key too

• Latch and Hold release correctly on virtual ports (VST targets like Omnisphere now stop on transport STOP, panic, and Latch toggle)
• Panic now releases VSTs that ignore CC 123 All Notes Off (per-pitch NoteOff sweep)
• Patch load sends the volume start value twice (30ms and 200ms) so slow synths whose program-load resets CC 7 still end at the intended volume (Alesis QSR drums confirmed)
• Volume slider MIDI Learn pre-catches takeover, so the first map jumps immediately like subsequent remaps do
• Volume rescue on patch exit uses max(start, current, 50) so abandoned synths land at an audible level without overshooting fade-in patches
• Chord effect no longer silences notes still claimed by an overlapping active chord (e.g. F-major no longer loses A and C when A-minor releases)

Chord was not passing its modifiers (sus2, sus4, maj7, dom7, 9) through to Arp and Trancegate, which could cause notes outside the key to play in those effects. Modifiers now pass through cleanly so downstream patterns stay in key.

Cleaner start and stop of MIDI effects when Midivex is following an external clock. Effects wait for transport play before firing and stop cleanly when the sequencer stops.

A new Sustain option keeps the arp cycling through one full pass of the currently held notes after you release, so the next chord can land on the beat without a gap. The cycle length scales with both rate and chord size.

Widen the main window and your effect chain reflows into two, three, or four columns, so you can see your whole setup at a glance.

Trigger any patch from a keyboard, foot controller, Stream Deck, or Lujin. Patches can also be linked to a Route Profile so one trigger switches your whole setup.

• Metronome click warm-up: the first click after idle now lands on the beat
• Fixed a startup race where an LFO on a patch device could block route playback
• Cleaner transport stop, fewer stray notes on rapid stop-to-start sequences

Virtual MIDI ports now pass through MIDI clock messages, enabling reliable clock sync between Midivex and your DAW via virtual ports. Previously, clock messages were filtered by the MIDI driver layer and never reached the app.

• Reduced CPU usage option for LFO and Orbits visualizations on lower-powered machines
• Improved startup reliability on systems with virtual MIDI devices
• Better handling of MIDI system messages on Windows with loopback drivers

Add a click to your transport with the new metronome toggle in the transport bar. Click volume and pitch are adjustable from the Setup panel, with accented beats on beat 1 for easy orientation.

A global input quantize (Off / 1/8 / 1/16 / 1/32) snaps incoming NoteOn messages to the nearest clock grid boundary, keeping arpeggiator and trancegate retriggers tight to the beat when free playing. Cycle through rates with the Q button in the transport bar.

A group solo button in the Active MIDI Devices header lets you turn off all soloed devices at once, preventing invisible solo blocking when switching between patches.

Improvements to the cloud-based synth preset system to handle a wider variety of program change formats for more MIDI instruments. New support for custom bank labels and a sub-bank-only mode for synths with non-standard bank organisation.

• Arpeggiator and trancegate timing improvements — tighter step accuracy, reliable gate durations, and cleaner transport stop behaviour
• Local control now restored correctly on app exit and Clear All
• Mute and solo state cleared automatically when a patch device is removed
• Chord display now shows chords for the selected device only
• Multi-timbral devices now receive program changes on their specific MIDI channel

Zones has been completely redesigned from a simple note range filter into a full keyboard split effect. Create up to 8 independent zones, each with its own output device and MIDI channel. Overlapping zones layer automatically, a Zones Only toggle controls whether notes outside your ranges pass through or are blocked, and a live voice monitor shows active note counts per zone. Zone boundaries support MIDI Learn so you can set split points by playing a key.

Any output device can now be set to multi-timbral mode, splitting it into named sub-devices with their own MIDI channels and synth profiles. Each sub-device appears independently in the route matrix and patch grid. Ideal for groove boxes and multi-timbral synths like the Novation Circuit Tracks.

The synth preset database is now hosted on our server and can be synced on demand from the Setup panel. New presets are added regularly and will appear in your app without needing to update. Your custom device configurations are always preserved and take priority over remote data.

Patch addressing now uses human-readable values throughout. Bank and patch numbers match what you see on your synth’s display, with Midivex handling the MIDI translation automatically. Supports numeric and alphabetic bank labels, sub-banks, and flexible start indices. Learn more in our Custom Device Presets guide.

Toggle local control on or off directly from patch device cards. When off, the synth’s own keyboard is silenced so only effects and routed MIDI produce sound. Supports both CC 122 and NRPN methods depending on the device.

Patch device cards now glow when MIDI is playing through them. Teal indicates direct play from the synth’s own keyboard, amber indicates notes arriving from an external controller or effect. A subtle border pulse gives you instant visual feedback across your whole setup.

A new toggle controls whether selecting a patch automatically sends program changes to your devices. Disable it to browse patches in the UI without changing sounds, then use Send All when you are ready.

The Tools effect now includes send and receive channel dropdowns, allowing per-route MIDI channel remapping without changing device settings.

• Fixed stuck notes when Arp or Trancegate effects are active during external MIDI clock stop
• Route matrix now updates immediately when a route is deleted
• Deleting the active profile correctly clears all routes
• Listen All toggle now deactivates reliably via MIDI mapping
• Send All button feedback is now visible outside developer mode
• Bank scrubber displays the correct range for auto-bank format devices

Create multiple simultaneous MIDI routes between any combination of input and output devices. Each route supports independent channel filtering, mute and solo controls, and real-time activity monitoring in a visual tube view.

Save and recall complete routing configurations as profiles. Switch between different studio setups, live performance layouts, or project-specific routings instantly.

Create virtual MIDI ports that appear as devices in your DAW and other MIDI applications, bridging Midivex with any software that supports MIDI.

• Arpeggiator — Clock-synced arpeggiation with configurable patterns, octave range, rate, swing, and gate
• Trancegate — Rhythmic note gating synchronised to MIDI clock with programmable step patterns
• Echo — BPM-synced note repeats with configurable feedback, delay time, and velocity decay
• LFO — Low-frequency modulation of any CC parameter at adjustable rate and depth
• Zones — Split your keyboard into multiple ranges, each routing to different outputs and channels
• Tools — Utility effect for MIDI channel override and processing options per route
• Swing — Apply groove and timing offset to any route for a more natural feel

Add, remove, and reorder effects per route with drag-and-drop. Each effect processes MIDI in sequence, and the chain can be toggled between route mode and patch mode.

Save and load patches across all connected devices simultaneously. Each patch stores bank select and program change values per device, recalling your entire studio setup with one click.

Ships with a curated database of synth device profiles covering common bank and program change formats. Select your synth from the dropdown and patch addressing is configured automatically.

Enable Listen All to monitor incoming program changes from your synths and automatically update patch values in the UI, keeping Midivex in sync with manual front-panel changes.

• Send — Generate MIDI clock at a set BPM and transmit to all connected devices
• Receive — Follow an external MIDI clock source for tight sync with your DAW or hardware sequencer
• Internal — BPM-estimated scheduling for effects without external clock
• Auto — Automatically switches between leader and follower based on detected incoming clock

Sub-millisecond MIDI timing using a custom scheduler built on the MessageChannel API, ensuring tight rhythmic accuracy for all clock-synced effects.

Map physical controls to 13 app actions including transport, panic, patch and profile cycling, listen mode, and tab navigation. Assign any CC message from any device with a single button press.

A scrolling log showing the last 50 MIDI messages with device name, channel, message type, and value. Includes chord detection powered by Tonal.js, displaying recognised chords in real time as you play.

Native desktop application for macOS (universal binary supporting Apple Silicon and Intel) and Windows (x64). Signed and notarised on macOS for a seamless install experience.

• Free — Core routing with limited features
• 14-Day Trial — Full Pro access, no credit card required
• Pro — All effects, unlimited routes, full patch management

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