Audio-Technica AT440ML OCC
The AT440ML OCC is a moving magnet phono cartridge from Audio-Technica, made in Japan. It appears to have been sold mainly through third-party dealers and auction listings, not as a mainstream catalog item. It turns up on eBay, at LP Gear and on Russian marketplaces, but very little formal documentation exists. What survives is a handful of specs and a few owner notes.
The cartridge uses a "Dual Magnet" stereo phono design with a gold-plated beryllium cantilever, which Audio-Technica touted for added durability. Tracking force is specified at 0.8 to 1.6 grams. The replacement stylus is the VMN40ML, a VM-type stylus with a frequency response of 20 to 27,000 Hz and an output voltage of 4.0 mV (1kHz, 5 cm/sec.). Those stylus specs are for the replacement VMN40ML only. The fact sheet gives no output or response figures for the original stylus, so none are guessed at here.
Owners report modest use. One seller noted the cartridge "played very little, 5-6 records," and a forum user picked one up on eBay for $91, described as barely used. Another listing included both the original stylus and an additional "440mla" stylus from the same period. One listing showed a "previous price" of $309.95 with 10% off, but that's a seller's mark-up, not an original retail figure.
Beyond that, the record is thin. There are no production years, no original price, no channel separation or impedance specs, no design deep-dive and no period reviews. What the documentation supports is a Japanese MM cartridge with a beryllium cantilever, and not much else.
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