Sounds better, feels better.
Mark I/II:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/axefx2_Quantum_1p03.zip
XL:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/AxeFx2_XL_Quantum_1p03.zip
XL+:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/AxeFx2_XL_PLus_Quantum_1p03.zip
Mark I/II:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/axefx2_Quantum_1p03.zip
XL:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/AxeFx2_XL_Quantum_1p03.zip
XL+:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/Quantum/1.0/AxeFx2_XL_PLus_Quantum_1p03.zip