What tubes does the Swart Atomic Space Tone use?

The Swart Atomic Space Tone uses 3× 12AX7 preamp tubes and 2× 6V6GT power tubes.

Who famously used the Swart Atomic Space Tone?

Dean Wareham, Paul Leary, Jeff Tweedy, and John Flansburgh are among the notable players associated with the Swart Atomic Space Tone.

Swart Atomic Space Tone preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Swart Atomic Space Tone is a small-builder combo in the tweed spirit: two inputs into one 12AX7 gain stage, then a volume and a single tone control. A 12AX7 drives and recovers a spring reverb (the Space control, with footswitch), and a third 12AX7 provides a cathodyne phase inverter and a tremolo oscillator with speed and depth that modulates the output-valve bias. Two 6V6GTs share a cathode resistor on a valve rectifier, known for sweet breakup at low volume.

Made in: USA
Wattage: 18W
Channels: 1
Preamp tubes: 3× 12AX7
Power tubes: 2× 6V6GT

Known for: Dean Wareham, Paul Leary, Jeff Tweedy, John Flansburgh.

Tags: american, boutique, 6v6, low-wattage, crunch.

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.