What tubes does the Valco 6150 use?

The Valco 6150 uses 2× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Valco 6150 produced?

The Valco 6150 was produced 1962–1967.

Valco 6150 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Valco 6150 was a mid-powered amplifier in the company's numbered series of the 1960s, representing a step up in power and features from the entry-level models. Its 6L6-based output stage delivered the warm, rounded American clean tone that characterised Valco's higher-powered offerings. The 6150 was available under various retail brand names depending on the distribution channel.

Years produced: 1962–1967
Made in: USA
Channels: 2
Preamp tubes: 2× 12AX7
Power tubes: 2× 6L6

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.