# PolyChorus

> This modulation entry consolidates documented PolyChorus variants, controls, settings and roles across dated guitarist pedalboards.

- Canonical page: https://pedalboardarchive.com/pedals/polychorus/
- Machine-readable index of the archive: https://pedalboardarchive.com/llms.txt
- Evidence and reconstruction conventions: https://pedalboardarchive.com/methodology/

- **Category:** Modulation
- **Types:** Chorus, Flanger, Modulation
- **Also known as:** EchoFlanger, Electro-Harmonix PolyChorus
- **Controls:** Feedback, Mode, Rate, Tune / delay, Width
- **Identification:** The model is identified.
- **Documented appearances:** 1 board, 1993

A wide cream four-control modulation box capable of the extreme metallic sweeps used on In Utero material.

## Documented boards

Each row is an observed appearance on a dated board. A position is only an observed one where that board's order evidence says so.

| Artist | Board | Date | Positions | Order evidence | Page |
| --- | --- | --- | --- | --- | --- |
| Kurt Cobain | In Utero touring chain | 1993-12-13 | 3 | Source-described | https://pedalboardarchive.com/artists/kurt-cobain/in-utero-tour-1993/ |