# Allison Research Kepex

> This dynamics entry consolidates documented Allison Research Kepex variants, controls, settings and roles across dated guitarist pedalboards.

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

- **Category:** Dynamics
- **Types:** Expander, Gate
- **Also known as:** Kepex, Kepex II
- **Controls:** Output, Range, Release, Threshold
- **Identification:** The model is identified.
- **Documented appearances:** 1 board, 1978

A blue studio module with threshold and release controls, integrated into the custom rack rather than left in a floor enclosure.

## 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 |
| --- | --- | --- | --- | --- | --- |
| Frank Zappa | Blue Box four-output effects system | 1978-01-01 | 8 | Source-described | https://pedalboardarchive.com/artists/frank-zappa/blue-box-four-output-rig-1978/ |