What tubes does the Univox Univox1221 use?

The Univox Univox1221 uses 12AX7 preamp tubes and EL84, EL84 power tubes.

When was the Univox Univox1221 produced?

The Univox Univox1221 was produced 1971–1975.

Univox Univox1221 preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Univox 1221 is a compact two-channel combo from Univox's 1200 series, representing a transitional design that bridges the original numbered series with the later solid-state-oriented models. Its circuit employs a hybrid or all-tube configuration with a British-influenced EQ stack producing a chimey, clear top end and firm mid-range response. The 1221's compact dimensions and moderate power rating make it well-suited to practice and studio use, where its responsive dynamics and touch-sensitive character can be appreciated at lower volumes. It reflects Matsumoku's increasing sophistication in amp circuit design during the early 1970s.

Years produced: 1971–1975
Made in: Japan
Wattage: 25W
Channels: 2
Preamp tubes: 12AX7
Power tubes: EL84, EL84

Tags: british.

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.