ADC 660E ()

Name: ADC 660E
Brand: ADC

A rare vintage phono cartridge that quietly turned heads in HiFi circles—when you can even find one

Overview

You know you’re diving deep when the mere sighting of a phono cartridge on eBay comes with a whisper of “pretty rare.” That’s the world of the ADC 660E—a name that doesn’t dominate collector forums or command five-figure auctions, but still carries a quiet mystique among those who track down obscure moving magnet gems. It’s not a superstar like a Shure V15 or a Denon DL-103, but if you're digging through turntable archives or restoring a late-era vintage deck, stumbling on an ADC 660E feels like finding a forgotten note in a record sleeve: cryptic, a little mysterious, but full of potential backstory.

Manufactured by ADC—the audio electronics brand, not the medical company—this is an IM (inductive magnetic) stereo phono cartridge built for analog purists who cared about fidelity without the fanfare. Described in listings as “retro vintage” and “pretty rare,” it’s clearly not something you see every day, even in the niche world of used cartridge hunting. Whether that rarity stems from low production numbers, poor documentation, or simply being overshadowed by bigger names isn’t clear—no historical context or official product narrative has surfaced. But its presence in ADC’s lineup, alongside other 600-series cartridges, suggests it was part of a broader effort to offer precise, replaceable-stylus designs during the analog resurgence of the late 20th century.

What’s most striking isn’t what we know about the 660E, but how little we *do*. There are no specs for output, frequency response, compliance, or tracking force. No weight, no dimensions, no mention of whether it’s high- or low-compliance, no details on the cantilever material or generator design. Just the bare bones: it exists, it’s vintage, and someone, somewhere, is still using it—or at least preserving it.

Specifications

Manufacturer	ADC
Product type	Phono cartridge/stylus
Stylus shape	Elliptical
Stylus tip shape	Spherical diamond

Collectibility & Value

The ADC 660E trades in whispers, not price guides. On March 1, 2025, a used ADC 660E Elliptical Stereo Phono Cartridge appeared on eBay with a listing price of $199—a figure that stands out, especially compared to earlier UK listings for the closely named ADC 660. That model, possibly a variant or earlier version, was listed at £62 on December 1, 2024, described as “Retro vintage . Tested. Pretty rare,” and another was listed at £82 on September 10, 2024, noted as “HiFi Cartridge and stylus Rare Boxed.” The premium on the boxed example suggests original packaging still carries weight in this micro-market.

Replacement styli are available, at least in theory. A compatible stylus for the ADC R-660/R660 was listed for $29 on May 3, 2024, offering some hope for longevity—though whether it fits the 660E exactly remains unconfirmed. Given the lack of technical documentation, buyers should verify compatibility carefully. There’s no data on common failures, wear patterns, or maintenance quirks, which means ownership comes with a DIY spirit: test it, trust your ears, and hope the stylus alignment holds.

With no original pricing, production years, or service manuals in circulation, the 660E remains a puzzle piece missing its box. Its value seems driven more by scarcity and nostalgia than measurable performance. For collectors, that’s part of the charm. For users, it’s a gamble—one that might pay off with warm, detailed playback, or leave you wondering what all the quiet buzz was about.