What tubes does the Valco 507 use?

The Valco 507 uses 1× 12AX7 preamp tubes and 1× 6V6 power tubes.

When was the Valco 507 produced?

The Valco 507 was produced 1957–1962.

Valco 507 preset

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

The Valco 507 was a small combo amplifier from Valco's broad catalog of OEM designs, sold under various brand names including National and Supro. Its straightforward valve circuit delivered a warm, twangy tone characteristic of American amplifiers of the late 1950s. The 507 chassis was a practical, affordable design aimed at the student and beginner market.

Years produced: 1957–1962
Made in: USA
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 1× 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.