Dynaco SCA-35 preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Dynaco SCA-35 is a stereo valve integrated amplifier, sold as a kit or factory-wired. Each side has a 12AX7 preamp with phono, tape and tuner inputs on a selector switch, shared volume, balance, bass and treble controls, and a 7199 pentode/triode driving a push-pull pair of EL84s (6BQ5) into a Z-565 output transformer, with a solid-state rectifier supply. Its small EL84 output stage gives a sweet sound, and some players convert it for guitar.

Tags: american, vintage, stereo, el84, diy, low-wattage.

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.