# Modified Rangemaster

> This gain entry consolidates documented Modified Rangemaster variants, controls, settings and roles across dated guitarist pedalboards.

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

- **Category:** Gain
- **Types:** Preamp, Treble booster
- **Also known as:** Dallas Rangemaster, Tony Iommi treble booster
- **Controls:** Boost
- **Identification:** The model is identified.
- **Documented appearances:** 1 board, 1970

A small amp-top germanium booster modified for a stronger, fuller push than the stock circuit.

## 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 |
| --- | --- | --- | --- | --- | --- |
| Tony Iommi | Black Sabbath debut path | 1970-02-13 | 1 | Source-described | https://pedalboardarchive.com/artists/tony-iommi/black-sabbath-debut-1970/ |