What tubes does the Sunn 100S use?

The Sunn 100S uses 4× 12AX7 preamp tubes and 4× EL34 power tubes.

When was the Sunn 100S produced?

The Sunn 100S was produced 1965–1972.

Who famously used the Sunn 100S?

Jimi Hendrix are among the notable players associated with the Sunn 100S.

What recordings feature the Sunn 100S?

Purple Haze by Jimi Hendrix (1967).

Sunn 100S preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sunn 100S is one of the earliest production amplifiers from the Sundholm brothers' Oregon company, establishing the clean, high-headroom aesthetic that would define the Sunn brand throughout its history. Four EL34 output tubes deliver 100 watts with a full, open sound that prioritised clarity and note definition over colour or compression. Jimi Hendrix incorporated Sunn amplification into his live rig during his early career, valuing the 100S for its ability to produce a wide, clean platform that his effects and technique could work upon without the amplifier imposing its own character.

Years produced: 1965–1972
Made in: USA
Wattage: 100W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× EL34

Known for: Jimi Hendrix.

Heard on: Purple Haze — Jimi Hendrix (1967).

Tags: american, clean, vintage.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.