# Unidentified 1960s Distortion Source

> This gain entry consolidates documented Unidentified 1960s Distortion Source variants, controls, settings and roles across dated guitarist pedalboards.

- Canonical page: https://pedalboardarchive.com/pedals/unidentified-1960s-distortion-source/
- Machine-readable index of the archive: https://pedalboardarchive.com/llms.txt
- Evidence and reconstruction conventions: https://pedalboardarchive.com/methodology/

- **Category:** Gain
- **Types:** Research placeholder, Unidentified saturation
- **Also known as:** 99th Floor distortion source, Moving Sidewalks unidentified fuzz
- **Controls:** Unknown
- **Identification:** The model is only partly identified; the archive records what the evidence supports.
- **Documented appearances:** 1 board, 1967

A neutral period-style placeholder used because no reliable surviving source identifies whether the saturated sound came from the amplifier or an external fuzz device.

## 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 |
| --- | --- | --- | --- | --- | --- |
| Billy Gibbons | 99th Floor documented core | 1967-01-01 | 1 | Reconstructed | https://pedalboardarchive.com/artists/billy-gibbons/moving-sidewalks-99th-floor-core-1967/ |