Precision Electronics Model 60PA preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Precision Electronics Model 60PA is a late-1950s tube PA amplifier, not a guitar amp. Each half of a 7025 serves one microphone input with its own level control, the second switchable to magnetic phono, and a phono/tuner input has its own level too. A 12AX7 amplifier stage with Bass and Treble controls and a 12AX7 phase inverter drive two fixed-bias EL34s, with two 5U4GB rectifiers, a 6973 voltage regulator and a multi-tap output for speakers or 70 V lines.

• Made in: USA
• Wattage: 60W
• Channels: 1
• Preamp tubes: 1× 7025, 2× 12AX7
• Power tubes: 2× EL34

Tags: american, vintage, el34, clean.

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.