# Hydra Stereo Reverb & Tremolo

> This reverb & ambience entry consolidates documented Hydra Stereo Reverb & Tremolo variants, controls, settings and roles across dated guitarist pedalboards.

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

- **Category:** Reverb & Ambience
- **Types:** Reverb, Stereo modulation, Tremolo
- **Also known as:** Hydra, Keeley Hydra
- **Controls:** Color, Colour, Depth, Dwell, Effect selectors, Mix, Mixer, Mode selector, Rate
- **Identification:** The model is identified.
- **Documented appearances:** 2 boards, 2021–2026

A wide blue dual-footswitch pedal combining three reverb and three tremolo modes.

## 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 |
| --- | --- | --- | --- | --- | --- |
| Ariel Posen | Suitcase touring pedalboard | 2026-03-27 | 7 | Reconstructed | https://pedalboardarchive.com/artists/ariel-posen/suitcase-touring-board-2026/ |
| Ariel Posen | Goodwood studio and travel board | 2021-05-26 | 8 | Source-described | https://pedalboardarchive.com/artists/ariel-posen/goodwood-studio-board-2021/ |