What tubes does the Ampeg AX-70 - Channel A use?

The Ampeg AX-70 - Channel A uses 3× 12AX7 preamp tubes and 2× EL34 power tubes.

When was the Ampeg AX-70 - Channel A produced?

The Ampeg AX-70 - Channel A was produced 1995–2000.

Ampeg AX-70 - Channel A preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AX-70 is a 70-watt all-tube guitar combo from Ampeg's 1990s AX series. Channel A provides clean tones while the drive channel adds bold overdrive from the EL34 output stage. A mid-powered combo well suited to club performances requiring clean headroom with drive-channel flexibility.

Years produced: 1995–2000
Made in: USA
Wattage: 70W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× EL34

Tags: guitar, american, modern, mid-wattage, drive.

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.