The Polyend Endless is an effects pedal you build yourself. Instead of shipping with a fixed set of multi-effects, it connects over USB-C to Polyend Playground, an AI-assisted, prompt-based chatbox where you describe an effect in words and the tool generates it for you. You can also load community effects or effects coded in C++ onto the pedal1. Polyend announced it at NAMM 2026, and it went up for preorder at $2992.
The Polish maker positions it as a pedal without boundaries. As Polyend puts it2:
"Endless doesn't place limits on what you can build,"2
Guitar World's reviewer came away impressed by the concept, calling it "a fascinating and futuristic take on the humble stompbox, with a massively ambitious ethos that deserves credit"3.
An effects pedal you build with prompts
The Endless is housed in a matte silver chassis with a brushed, almost satin sheen to the touch3. Under the hood it runs on a 720 MHz ARM Cortex-M7 processor driving the stereo 48 kHz / 24-bit audio path1. The workflow centers on Polyend Playground: connect the pedal over USB-C, describe the effect you want in the chatbox, tweak it there, and upload it to the pedal. Because the platform is open source, effects written in C++ and community-shared effects can go onto it too1.
That makes it a different animal from a conventional multi-effects unit. A pedal like Polyend's own MESS works differently, while the Endless instead holds whatever you or the community create, one effect at a time3.
The Endless can only ever load one effect at a time3. There is no preset scrolling or effect chaining on the pedal itself; changing your sound means building or downloading a different effect and uploading it over USB-C.
The controls
The front panel keeps things minimal: two footswitches and three rotary controls, all customizable and interchangeable depending on the loaded effect3. One footswitch handles on/bypass, and the other is freely assignable2. The rotaries map to whatever parameters the current effect exposes.
Holding the "on" switch unlocks a second layer: the rotaries then access dedicated preamp, master and mix controls1.
| Control | What it does |
|---|---|
| Footswitch 1 | On / bypass2 |
| Footswitch 2 | Freely assignable2 |
| 3x rotaries | Customizable, mapped by the loaded effect3 |
| Rotaries (hold "on" switch) | Preamp, master and mix controls1 |
Stereo, mono and expression
The Endless runs in stereo through its TRS stereo line input and TRS stereo line / headphone output, with a jack for an expression pedal and USB-C for uploading effects3. The operating mode is set at power-up: hold the left footswitch while powering up to run in mono, the right to go stereo3.
What reviewers said
Guitar World reviewed the Endless after its NAMM 2026 Best in Show win and framed it as an ambitious rethinking of what a stompbox is3. The review's overall verdict credited the concept even while noting the single-effect limitation, calling it "a fascinating and futuristic take on the humble stompbox, with a massively ambitious ethos that deserves credit"3.
Videos
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Questions
Does the Polyend Endless run in stereo?
Yes. It has a TRS stereo line input and a TRS stereo line and headphone output, running a stereo 48 kHz / 24-bit audio path. To use it in stereo you hold the right footswitch while powering up; holding the left footswitch at power-up puts it in mono.
Is the Polyend Endless true bypass?
No. Guitar World's review lists its bypass as buffered. That means the signal passes through the pedal's circuitry even when the effect is off, which keeps the signal strong over long cable runs but is not the transparent pass-through of true bypass.
Can the Polyend Endless hold more than one effect at a time?
No. Only one effect can be loaded into the Endless at a time. You build or download effects through Polyend Playground and upload the one you want over USB-C, so switching between effects means loading a different one rather than scrolling through presets.
What is Polyend Playground?
Polyend Playground is an AI-assisted, prompt-based chatbox for creating and tweaking custom effects. You connect the Endless to it over USB-C and describe the effect you want in words; the Playground generates it and you upload it to the pedal.
Does the Polyend Endless work with an expression pedal?
Yes. The pedal has a dedicated expression pedal jack alongside its TRS stereo input and output and its USB-C port, so you can control parameters in real time with an external expression pedal.
How much does the Polyend Endless cost in US dollars?
The launch price is $299, announced in January 2026, with the same figure quoted in euros and British pounds. Preorders opened at that price and shipping was scheduled to begin on February 22, 2026.
Sources (3)
- “If you can describe the effect, you can make your own”: Polyend Endless is a customisable stompbox with a text-to-effect generator, MusicRadar, 2026-01-23
- Polyend releases Endless, Guitar World, 2026-01-24
- Polyend Endless review, Guitar World, 2026-04-28
