What tubes does the Valco Valco 1205 use?

The Valco Valco 1205 uses 1× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Valco Valco 1205 produced?

The Valco Valco 1205 was produced 1960–1966.

Valco Valco 1205 preset

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

The Valco 1205 was a house-branded amplifier carrying the Valco name directly rather than one of the company's many retail brand aliases, suggesting it may have been sold through specific channels or as a replacement/dealer unit. Its all-valve circuit was consistent with Valco's standard design practice, delivering the warm, present American tone that defined the company's output. The Valco-branded models are comparatively rare since most production was sold under OEM brand names.

Years produced: 1960–1966
Made in: USA
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 2× 6V6

Tags: american.

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.