What tubes does the Sano 250R use?

The Sano 250R uses 4x 12AX7 preamp tubes and 4x 6L6 power tubes.

When was the Sano 250R produced?

The Sano 250R was produced 1964–1969.

Sano 250R preset

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

The Sano 250R is one of the larger amplifiers in the Sano line, delivering approximately 50 watts through a complement of 6L6 output tubes with onboard reverb. It was positioned as a professional-grade head or combo for serious touring and recording musicians. The 250R's clean headroom and quality spring reverb made it competitive with contemporary Fender amplifiers in the Italian-American East Coast market.

Years produced: 1964–1969
Made in: USA
Wattage: 50W
Channels: 2
Preamp tubes: 4x 12AX7
Power tubes: 4x 6L6

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.