What tubes does the Hiwatt SA412 - Normal use?

The Hiwatt SA412 - Normal uses 4× ECC83 preamp tubes and 4× EL34 power tubes.

When was the Hiwatt SA412 - Normal produced?

The Hiwatt SA412 - Normal was produced 1970s–1980s.

Hiwatt SA412 - Normal preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Hiwatt SA412 is a 100-watt Hiwatt head with a different voicing from the DR103, featuring a Brilliant channel for added presence and sparkle. Four EL34s deliver the trademark Hiwatt clean headroom.

Years produced: 1970s–1980s
Made in: UK
Wattage: 100W
Channels: 2
Preamp tubes: 4× ECC83
Power tubes: 4× EL34

Tags: british, clean, vintage, high-headroom.

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.