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Audio Technica ATOC9

Moving-Coil Cartridge

Audio Technica ATOC9


The AT-OC9 incorporates a powerful samarium cobalt magnet in the magnetic circuit.

The greater magnetic density between NS yoke poles improves the electrical generation.

The pure copper by Ohno continuous casting process has revolutionised transparent transmission and has raised to a high level of efficiency and accuracy of the transmission.


Frequency response: 15 to 50,000 Hz

Output voltage: 0.4mV

Channel separation: 30dB / 31dB (ML II)

Output balance: 1.0dB

Vertical tracking force: 1.25 to 1.75g (standard 1.5g)

Stylus: special elliptical / MicroLine (ML II)

Weight: 7.8g


Neutral through the midrange, the OC9 is less sweet and three-dimensional than, for example, the vdH MC One, but not by much. Highly recommended (and an excellent tracker).


advert  English

instruction/owners manual  English

instruction/owners manual  English Deutsch Francais - radio-manufaktur

III instruction/owners manual  English

III instruction/owners manual  Nihongo - themisto462

III Ltd instruction/owners manual  Nihongo - themisto462

ML II instruction/owners manual (alt scan)  English - Terry Robinson

ML II instruction/owners manual  English

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Audio Technica ATOC9 / AT OC9 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Audio Technica.


OC - models above OC9

... there were further developed models above AT-OC9 (MLII)

- AT-OC10 (red/silver box)
- AT-OC30 (green/gold box)

which are not listed here. I may be able to input more detailed information if desired.