ADC CFX-2 ()
That moment when the vocals lock in and the high hats shimmer just right - this little elliptical diamond is why some still swear by ADC.
Overview
The ADC CFX-2 is a phono cartridge for playing vinyl records. It is built around a stylus assembly meant for groove contact and detail retrieval. Full documentation on its origins or engineering philosophy is hard to find. The replacement stylus from LP Gear confirms its role in a high-fidelity audio chain. Owners today are likely running the LP Gear replacement stylus, which is marketed as delivering natural sound quality, pristine detail, precision tracing of record grooves, and excellent reproduction of voice, music, and harmonics. That is a big claim for a vintage cartridge, where a fraction of a micron in stylus shape can make or break the listening experience.
ADC has 68 known models in the vintage audio catalog, so the CFX-2 sits somewhere in that lineup. Its exact position, siblings, and predecessors are undocumented. The stylus geometry is the interesting part: a special elliptical diamond tip with scanning radii of .0003 x .0007 inch. This shape rides deeper into the groove walls than a conical tip, so in theory it retrieves more high-frequency information and cuts distortion, especially on inner grooves. It is paired with a thin-wall aluminum alloy cantilever. The aim is a stiff, light assembly that follows groove modulations accurately without adding resonance or inertia.
There are no electrical specs on record - output voltage, compliance, tracking force, frequency response - so it is hard to say where the CFX-2 sits among moving-magnet or moving-coil designs. Nothing confirms whether ADC sold it as a budget, mid-tier, or premium model. No original pricing, production years, or technical manuals have surfaced. The manufacturer's own historical materials (such as those from American Diagnostic Corporation) do not mention the CFX-2, so its provenance rests almost entirely on third-party retailers like LP Gear.
Specifications
| Manufacturer | ADC |
| Product type | cartridge |
| Stylus tip shape | special elliptical diamond |
| Stylus scanning radii | .0003 x .0007 inch |
| Cantilever material | thin-wall aluminum alloy |
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Service Manuals, Schematics & Catalogs
- Catalog (1989) — archive.org
- Catalog — archive.org