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Polyend MESS Multi-FX Step Sequencer Pedal

BH #POMESS • MFR #MESS
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Polyend MESS Multi-FX Step Sequencer Pedal
Key Features
  • Combines 16-Step Sequencer with FX
  • Create Generative Performances
  • 4 Independent FX Tracks, 120 FX Total
  • 16 RGB Sequencer Pads, 4 RGB Tracks Pads
Enter a new dimension of creative possibilities with the Polyend MESS, a multi-FX pedal with an innovative 16-step sequencer that lets you add generative motion to FX parameters, adjust rhythm and track length, and add randomization to the mix. With four independent FX tracks and 120 FX total, you have plenty of tools in the box, while 16 RGB sequencer pads allow for hands-on control.
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Polyend MESS Overview

Multitrack Step Sequencer with FX and Character
Enter a new dimension of creative possibilities with the Polyend MESS, a multi-FX pedal with an innovative 16-step sequencer that lets you add generative motion to FX parameters, adjust rhythm and track length, and add randomization to the mix. With four independent FX tracks and 120 FX total, you have plenty of tools in the box, while 16 RGB sequencer pads allow for hands-on control.

Along with 16 sequencer pads, the MESS (multi-effect step sequencer) features four RGB pads for triggering the four independent FX tracks. Two-hundred presets are included, and up to 1000 custom presets can be stored. Effects and functions include modulation, reverb, delay, looping, bitcrushing, and spectralization, as well as EQ, filters, panning, automation, and dedicated pitch shifters for sequenced pitching. You can engage in per-step parameter sequencing for truly adventurous sound design, and you can also adjust step probability and create polyrhythms and polymeters. Everything can be viewed on the big color screen, and you have two pots, four push encoders, and three footswitches for further control. Connections include a USB-C for charging, MIDI, and data transfer; a stereo pair of 1/4" outputs, a single stereo 1/4" TRS input, an expression pedal input, 3.5mm TRS MIDI I/O, and a microSD-card slot. The MESS includes a 32GB microSD card to get you started.

What Makes MESS Different?
MESS turns effects into an instrument. Unlike conventional multi-effect units that rely on static presets, MESS offers dynamic, programmable, and performative sound design. This effect powerhouse is equally at home on pedalboards, in modular synth setups, or integrated into DAW-less setups—making it ideal for guitarists, synthesists, drum-machine enthusiasts, and sound designers.
Over 120 FX Built to Sequence or Stack
MESS features 120 high-quality, stereo effects, ranging from traditional to the experimental. Choose from analog-style modulation and time-based staples, or innovative spectralizers and new ways to use granular engines.

  • Multimode Reverb: 5 reverb modes with 25 submodes, from massive ambience to realistic room and plate simulations.
  • Granular Bust: a Dynamic multimode granular engine that transforms audio in real time.
  • Particle Sampler: unique granular sampling effect that captures audio from a selected step are replays it rhythmically.
  • Microlooping: chopping and repeating with direct control. Loop tiny fragments of sound or large subdivisions for synced micro-fragments to precise rhythmic chaos. Intuitive slicing, looping, and rhythmic manipulation from microfragments to precisely timed repeats.
  • Deluge of Delays: multitap, ping-pong, and single delay engines with models from tape, analog, digital, and more.
  • Modulation of every sort: over 25 submodes of modulation from tremolos, seasick vibratos, classic choruses, or robotic flangers.
  • Many Shapes: 12 unique shaper modes ranging from subtle saturation and overdrive, to aggressive bitcrushing, to sample-rate reduction.
  • Spectralizers: Two spectral modes for wild pre-reverberations, alien screams, or gentle harmonic smearing.
  • EQ, Filter, Pan, and Automate: sequence filters and panners for dynamic tonal shaping, enhanced stereo fields, and vocal formant effects.
  • Repitch Everything: dedicated pitch shifters and sequenced repitching for granular, spectral, and loop effects.
Make Anything Musical
MESS’s 16-step grid pad is a real-time sequencer and editor—with intuitive hands-on controlthat rewards experimentation without an advanced degree in sound design required. Sequence effect parameters, start or stop sequences without cutting out the effects, or build complex polyrhythmic patterns that evolve as you play.

  • Per-step parameter sequencing
  • Adjustable track length and playback speed for polymeter and polyrhythm creation
  • Chance and probability control for generative sequences or precisely times effects
  • Tap tempo synchronization ensures rhythmic precision for delays, tremolos, and slicers
  • Quickswap effects and change the effects order with the push of a button
4-Track Sequencing Power
Each track runs independently, with detailed control over parameters, time divisions, and length. Create slow spectral sweeps by slowing a sequencer down to 1/16th of the chosen tempo while increasing the speed of a microlooper for chaotic, glitchy stutters, all in the same patch. MESS has the tools to build-up textures or tear them apart.

Polyend MESS Specs

General
Sampling Rate
24-Bit / 48 kHz (32-Bit Float DSP)
Controls
16 x RGB Silicone Sequencer Pad
4 x RGB Silicone Tracks Pad
2 x Potentiometer
4 x Push Encoder
3 x Footswitch
Inputs/Outputs
USB I/O
1 x USB-C Female Input/Output
Audio I/O
1x 1/4" TRS Hi-Z/Instrument/Line Input (Stereo)
1x 1/4" TRS Input (Expression)
1x 1/8" / 3.5 mm TRS MIDI Input
2x 1/4" Line Output (1 Stereo Pair)
1x 1/8" / 3.5 mm TRS MIDI Output
Media/Memory Card Slot
Single Slot: microSD/microSDHC [32 GB Maximum]
Power
Power Source
AC Adapter with Power Brick (Not Included)
DC Input Power
9 VDC at 0.5 A
Operating Current
1 A (Maximum)
Physical
Color
Black
Dimensions
7.09 x 4.72 x 2.24" / 18.01 x 11.99 x 5.69 cm
Weight
2.05 lb / 0.93 kg
Packaging Info
Package Weight
3.18 lb
Box Dimensions (LxWxH)
10 x 6.7 x 3.5"

Polyend MESS Reviews

Great pedal, easy to use!

By Ryan
Rated 4 out of 5
Date: 2025-12-18

I'm primarily using this pedal with synths, but also will use it with my guitars as well a bit. It has excellent build quality, and the user interface is very easy to figure out. Chaining multiple effects together is very intuitive, as it sequencing effects with the step sequencer. The effects sound great and I am looking forward to being creative! I do wish it came with the AC adapter for this price point, but I had extra pedal power supplies around.

Bite Sized Zoia

By Nathan
Rated 4 out of 5
Date: 2025-09-10

I've been loving this pedal for MIDI pairing with Elektron gear. Having a clocked and sequenced FX pedal is a gamechanger, plus all of the effects sound really nice. I also love being able to change audio routing, randomize effects slots, and save up to 1000 patches. It feels like a slightly less overwhelming Zoia. I can't wait to see what they add as new firmware updates come out.

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