EICO HF-85 - Left preset

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

The EICO HF-85 is a hi-fi tube component from the Electronic Instrument Company (EICO) of New York, likely a preamplifier or tuner unit from EICO's expanding hi-fi kit lineup of the early 1960s. EICO built a comprehensive ecosystem of hi-fi kit components designed to work together in a complete home audio system. Specific technical details for the HF-85 are not widely documented.

• Years produced: 1960–1968
• Made in: USA
• Channels: 1

Tags: american, vintage.

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.