TŒRN

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TŒRN is a standalone, open-source sequencer and sampler designed for musicians of all levels—from beginners to seasoned performers. Developed by Jan from SP_ctrl in Hamburg, it’s the evolution of the NI404 prototype, offering a portable and intuitive interface that combines fun with deep musical capabilities. TŒRN is perfect for live performances, studio sessions, and on-the-go music creation.

Feature List

  • Playful Design
    • 16×16 RGB LED grid for dynamic visual feedback
    • Intuitive controls encouraging experimentation
    • Suitable for users aged 8 to 80
  • Powerful Sequencer
    • 16-bar patterns x 16 pages (256 bars total)
    • Autosave/autoload functionality
    • Real-time sample switching (up to 999 samples)
    • 8 sample voices with individual sample trimming
    • Assignable effects: ADSR, bitcrusher, filters, flanger, reverb
    • Intelligent random note generation (scale-aware)
    • Real-time transpose, shift, delete, copy/paste
  • Deep Sound Design
    • Load WAV samples via SD card
    • 3 switchable analog-style drum voices: bass drum, snare, hi-hat
    • 1 three-voice synth (3 oscillators per voice)
    • 2 one-voice synths (2 oscillators each)
    • Full effect chain per voice
    • Assignable channel filters accessible via encoder
  • Advanced MIDI Control
    • Global MIDI TRS in/out support (channels 1–16)
    • Per-voice MIDI out channel assignment
    • Send/Receive MIDI clock
    • Clock range: 40–300 BPM
  • DIY & Open Source
    • Firmware: MIT License (free for personal & commercial use)
    • Hardware: CC BY-NC 4.0 (free for non-commercial use)
  • Custom 4-layer PCB design with pre-assembled SMD components
  • Integrated USB-C & audio interface
  • Translucent black laser-cut plexiglas housing
  • DUPPA I2C 2.1 RGB encoders with push buttons
  • 16×16 WS2812B RGB LED grid managed by FastLED
  • Arduino-compatible firmware based on Teensy 4.1
  • 16MB PSRAM memory
  • Audio I/O: 6.35mm jacks for headphones, line-in/out, mic-in, plus internal mic
  • Power via USB-C or optional LiPo battery with charging (1500mAh, ~3h runtime)

Price: DIY

Link: https://toern.live/#about