Valco 510-149 - Reverb preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Valco 510-149 is a two-channel valve amp from the maker of Supro and National amps. One channel has spring reverb driven by its own 6973, the other is a normal channel, each with treble and bass inputs and a bridged tone control. Three 6EU7s handle the preamp and phase inversion ahead of a 6973 push-pull pair with a 5Y3GT rectifier, for a raw, compressed, mid-forward vintage tone.

• Made in: USA
• Wattage: 15W
• Channels: 2
• Preamp tubes: 3× 6EU7, 1× 6973 (reverb driver)
• Power tubes: 2× 6973

Tags: american, vintage, reverb, two-channel, breakup, low-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.