The Shure V15 Type III arrived in 1979 like a surgeon's tool in a world of hammers. By then, moving magnet cartridges were already mature technology—Shure had been refining them since the late '50s—but the Type III represented something different: obsessive attention to trackability, channel separation, and what Shure called "tracing ability." Translation: this thing could follow the groove wall with such precision that you heard the recording, not the cartridge.
The V15 III used a nude elliptical stylus—actual diamond, shaped to the micron—paired with a magnet system that gave it a quoted frequency response of 10 Hz to 50 kHz, which meant nothing and everything. More useful: the cartridge tracked at 1.25 grams and could handle clean vinyl without audible distortion or mistracking that would make you wince. The output impedance sat at 47k ohms, designed to work with any preamp made in the last forty years. Shure wasn't trying to be precious. They were trying to be accurate.
The magic was in the suspension. The V15 III used a tiny rubber-and-polymer assembly that damped resonance without killing transient response. Listen to a harpsichord recording through this cartridge and you hear the pick strike—the actual attack of the pluck—not a smeared approximation. That's the point. This is a cartridge that made mastering decisions audible. If the engineer rode the level on a vocal line, you heard it. If there was a subtle EQ cut in the midrange, the cartridge reported it like a court stenographer.
It became the standard reference cartridge for serious turntable nerds through the '80s, especially when mounted on a Technics SL-1200 or a Linn Sondek. The pairing with the Technics PD121 direct-drive platter became something close to legendary in certain circles—rock-solid speed stability married to trackability that made every pressing reveal itself completely.
The honest caveat: it's analytical to the point of ruthlessness. Play a mediocre pressing or a poorly mastered reissue and the V15 III won't forgive. It will tell you exactly what you did wrong. Some people love that. Some people want their cartridge to smooth over the sins of the source material. If you're the latter type, keep walking. The V15 III has no interest in flattering anyone.
The Type III was produced until 1988, when Shure replaced it with the Type IV. Both are excellent. The III has aged beautifully—less pricey than the IV on the used market and, if you ask serious collectors, just as revealing. A clean example will cost you $400 to $700 depending on condition and whether the original stylus has any hours on it. If it's a replacement stylus, subtract accordingly.
It's a cartridge for people who care about what they're listening to enough to want to hear exactly what's there.