Sovtek MIG-50 - Channel I preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sovtek MIG-50 is a Russian-built 50-watt valve head with two inputs, each with its own triode stage and its own volume, mixed into a further gain stage and a cathode follower driving a treble, bass and middle stack. A long-tail phase inverter with a Presence control and negative feedback drives two fixed-bias output pentodes into 4/8/16-ohm taps. A silicon bridge with standby supplies the high voltage. With no master volume it goes from clean to mild overdrive as the volumes come up.

Tags: crunch, 6l6, mid-wattage, two-channel.

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.