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) type phono cartridge manufactured by Audio-Technica. It was priced at ¥25,000 in its original market. Designed for high-fidelity vinyl playback, the cartridge features a body-replacement system for needle servicing, with replacement bodies available separately for ¥15,000. It weighs 7.8 grams and requires a needle pressure of 1.5 grams for proper tracking.
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
It features a mount base constructed from hard techni-hard material, contributing to structural rigidity and resonance control.
Market
The AT-OC9 was sold with a replacement body option priced at ¥15,000, indicating a service-oriented design approach where the entire cartridge body is swapped for stylus renewal rather than individual stylus replacement.
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