Dynacord Hallrex - Input II preset

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

The Hallrex is a 1961 Dynacord EL84 combo with its own spring reverb, which is where the name ('Hall') comes from. Two inputs each have their own volume; an ECL86 triode amplifies the first, and the ECL86 pentode drives the reverb unit through a transformer. An EAM86 recovers and mixes the reverb, which can be footswitched, and an ECC83 gain stage and cathodyne inverter drive two EL84s, with an EZ81 rectifier.

• Made in: Germany
• Channels: 2
• Preamp tubes: 1× ECL86, 1× EAM86, 1× ECC83
• Power tubes: 2× EL84

Tags: german, vintage, el84, reverb.

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.