What tubes does the Fonica W-701 - Channel I use?

The Fonica W-701 - Channel I uses 2× ECC83, 1× EF86, 2× ECC85, 1× EN84 preamp tubes and 2× EL84 power tubes.

When was the Fonica W-701 - Channel I produced?

The Fonica W-701 - Channel I was produced 1965.

Fonica W-701 - Channel I preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Fonica W-701 is a Polish two-channel tube amplifier. Channel I has passive bass and treble controls and Channel II a simple volume; both mix into an EF86 pentode stage and an ECC85 cathodyne driving two EL84s. An ECC85-based tremolo and an EZ81 rectifier round out the circuit.

Years produced: 1965
Made in: Poland
Wattage: 15W
Channels: 2
Preamp tubes: 2× ECC83, 1× EF86, 2× ECC85, 1× EN84
Power tubes: 2× EL84

Tags: vintage, el84, tremolo, two-channel, 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.