Currently shipping ATXN11 stylus as a substitute for ATXN1.  Despite some claims on the internet, as of press time, we are unable to find any official legacy literature or images proving the existence of an Audio Technica ATX11 or ATX-11 cartridge.

Cross references:
Eurochannels 764
Zafira 5165

AUDIO TECHNICA CARTRIDGE AT-X1 ATX1

FYI:

Feature	ATX-N1 Stylus (red/gray)	ATX-N11 Stylus(gray/gray)
Default Tip Shape	Conical / Spherical (0.6 mil)	Conical / Spherical (0.6 mil)
Primary Cartridge	Audio-Technica ATX-1	Audio-Technica ATX-11
Suspension	medium 1.5-2.5 grams tracking	medium-firm

Can serve as a HiFi conical replacement for:

ATXN3 Compass as found in the audio-technica AT-X3E Cartridge

ATXN5 Compass as found in the audio-technica AT-X5E Cartridge

ATXN11 Compass as found in the audio-technica AT-X11 Cartridge