HH Scott 299B preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The H.H. Scott 299B is a stereo tube integrated hi-fi amplifier, not a guitar amp, with two identical sides. Each has a 12AX7 phono preamp, a 12AX7 tone stage with bass, treble, loudness-volume and scratch and rumble filters, and an ECF80 (6BL8) amplifier and phase inverter driving a push-pull pair of 7189 (EL84-type) tubes with balance and bias adjustments. A GZ34 rectifier, tape monitor and centre-channel output complete it.

• Made in: USA
• Wattage: 40W
• Channels: 1
• Preamp tubes: 4× 12AX7, 2× ECF80
• Power tubes: 4× 7189 (EL84-type)

Tags: american, vintage, stereo, el84, 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.