Tracker

PolyendGrooveboxes

Standalone tracker-style sequencer and sampler

The Tracker is a standalone sampler, synthesizer and sequencer from Polyend that takes its workflow from the tracker software that originated on the Amiga. It has a mechanical keyboard, 48 backlit pads, a large screen and a haptic knob, and plays samples as sampler, wavetable or granular instruments. It records from line or microphone inputs and has an FM radio, stereo output, MIDI in and out, and USB-C.

Stock firmware: 1.9.2
Manufacturer: polyend.com

Angled view of the original Polyend Tracker standalone tracker-style sequencer and sampler — Photo: Polyend, manufacturer product image, via polyend.com

Notes

Official firmware 1.9.2 dates from October 2025. The one third-party tool here targets the older 1.5.0 release and has not been updated since 2024.

Firmware 1

Tracker Firmware Mod
Patches for Tracker firmware 1.9.2 built on your own .ptf file, adding a software master EQ, a DJ filter on Shift + Master + jog, and Braids synth instruments, plus an emulator and notes on the audio engine.
by mranthropology
ActiveSource: openunspecified
Distribution
Patches a stock file you supply
Requires stock
1.9.2
Brick risk. Flashing this carries a known, documented risk of damaging the device.
- fx
- filter
- synth-engine
- emulator
- research
- patch
Tracker Firmware Mod version history
Version Date Notes
main @ f5908e8 2026-10-14 No tagged releases; this is the latest commit.

Tracker Firmware Mod version history
Version	Date	Notes
main @ f5908e8	2026-10-14	No tagged releases; this is the latest commit.

Tools 1

RETracker
Tool
Python reverse-engineering framework that patches Tracker firmware 1.5.0 to add a USB RAWHID handler for memory dumps, memory writes, running code and SD card file transfer.
by patois
DormantSource: openunspecified
Distribution
Patches a stock file you supply
Requires stock
1.5.0
- research
- loader
RETracker version history
Version Date
master (last push 2024-06-19) 2024-06-19