Audio-Technica AT-OC9
A dual MC cartridge from Audio-Technica with an all-PPCC configuration and PCOCC wiring from coil to terminal.
Overview
The Audio-Technica AT-OC9 is a dual MC (moving coil) phono cartridge. It cost ¥25,000 in its original market. The body is replaceable for needle servicing, and replacement bodies were sold separately for ¥15,000. The cartridge weighs 7.8 grams and needs a needle pressure of 1.5 grams to track properly.
Specifications
| Type | MC Cartridge |
| Frequency characteristic | 15 Hz to 50 kHz |
| Output voltage | 0.4mV |
| Needle pressure | 1.5g |
| Standard impedance | 12 Ω |
| Dead weight | 7.8g |
| Needle exchange | Body replacement |
| Replacement body price | ¥ 15,000 |
Design
The mount base is made of hard techni-hard material, which adds structural rigidity and helps control resonance.
Market
The AT-OC9 was sold with a ¥15,000 replacement body option. When the stylus wears out, you swap the entire cartridge body instead of replacing the stylus alone.
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