Valco Montgomery Wards 94-JDR-8420 - Normal preset

Close · 65/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Montgomery Wards 94-JDR-8420 is a Valco-manufactured amplifier sold through the Montgomery Ward catalog under their house brand, representing the wide distribution network Valco utilized for its amplifier designs. The circuit is consistent with contemporaneous Supro and National models, delivering the characteristic Valco American tube tone under a catalog retailer label. These catalog-brand Valco amps are increasingly sought by collectors who appreciate their underdog status.

Tags: american, vintage.

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.