Dynacord DA 20 - Mic preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The DA 20 is a 1962 Dynacord EL84 amp with microphone, echo, guitar and accordion inputs. ECC83 input stages feed a second ECC83 stage and a passive bass/treble network, then an ECF80 gain stage and cathodyne inverter drive two cathode-biased EL84s, with an EZ81 valve rectifier. A further ECC83 runs a vibrato/tremolo oscillator with switched speed settings that can be turned on and off from a remote footswitch.

• Made in: Germany
• Channels: 3
• Preamp tubes: 3× ECC83, 1× ECF80
• Power tubes: 2× EL84

Tags: german, vintage, el84, tremolo.

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.