What tubes does the Valco 510 4 use?

The Valco 510 4 uses 1× 12AX7 preamp tubes and 1× 6V6 power tubes.

When was the Valco 510 4 produced?

The Valco 510 4 was produced 1957–1962.

Valco 510 4 preset

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

The Valco 510-4 was one of the simpler members of the 510 chassis family, likely a low-wattage or entry-level configuration of the common Valco platform. Its basic circuit was typical of affordable American valve design of the period, emphasising reliability and economy over tonal sophistication. These amps were the foundation of Valco's volume business through mail-order and department-store channels.

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.