# MXR M133 Micro Amp

> This gain entry consolidates documented MXR M133 Micro Amp variants, controls, settings and roles across dated guitarist pedalboards.

- Canonical page: https://pedalboardarchive.com/pedals/mxr-m133-micro-amp/
- Machine-readable index of the archive: https://pedalboardarchive.com/llms.txt
- Evidence and reconstruction conventions: https://pedalboardarchive.com/methodology/

- **Category:** Gain
- **Types:** Clean boost, Preamp
- **Also known as:** M133, Micro Amp
- **Controls:** Gain
- **Identification:** The model is identified.
- **Documented appearances:** 1 board, 2010

A compact cream box dominated by one large black gain knob and a single footswitch.

## 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 |
| --- | --- | --- | --- | --- | --- |
| Adam Jones | Tool touring effects board | 2010-09-13 | 1 | Reconstructed | https://pedalboardarchive.com/artists/adam-jones/tool-dunlop-tech-board-2010/ |