ADC LX-II (Late 1970s–Early 1980s?)

Name: ADC LX-II
Brand: ADC

A no-frills, all-black workhorse cartridge from ADC’s golden era—beloved for its precise elliptical stylus and solid tracking, even if the specs are murky and the history sparse.

Overview

You don’t stumble across the ADC LX-II at a garage sale and gasp. It doesn’t have the chrome trim of the XLM or the boutique mystique of the Swiss nude stylus models. It’s just black—body, nose, cantilever housing—the whole thing as plain as a utility knife. But that simplicity hides a purpose-built tracker that a lot of folks quietly swear by, especially if they’re digging through worn vinyl or want something that won’t flinch at a groove’s worst mood. The LX-II isn’t flashy, but it’s not trying to be. It’s a phono cartridge from ADC (Audio Dynamics Corp), a company better known for its high-end moving magnet designs like the XLM series and, later, their Sound Shaper equalizers. This one, though, sits lower on the totem pole—likely a cost-conscious sibling in the same family, built with the same chassis but probably a step down in the stylus department.

And speaking of the stylus: that’s where the LX-II actually shines. It uses a highly polished special elliptical diamond tip, the kind that’s shaped to dig deeper into the groove walls than a standard conical needle, pulling out more detail without getting jumpy. The scanning radii are tight—.0003 x .0007 inch—which means it’s designed to trace the high-frequency modulations in the record with real precision. Owners report “superb tracking and tracing of record grooves,” and while that phrase sounds like marketing fluff, in this case, it lines up with what users actually say in forums: it just *sticks*. No skating, no mistracking on inner grooves, no sibilance tantrums. It delivers “finer detail and harmonically complete sound quality,” according to the retailers who still stock replacement styli. That’s not hyperbole—it’s the mechanical advantage of a well-polished elliptical tip doing exactly what it’s supposed to.

But here’s the catch: almost everything we know about the LX-II comes from what it shares with other ADC cartridges, not what it does uniquely. There’s no official spec sheet, no original manual floating around, and no big magazine review from 1979 to quote. We’re piecing this together from forum posts, replacement part listings, and cross-model comparisons. Even the production years are a guess—someone on Vinyl Engine once said it was probably from the “late 70s or early 80s,” and until a brochure turns up, that’s as close as we’ll get.

Specifications

Manufacturer	ADC (Audio Dynamics Corp)
Product type	phono cartridge
Stylus tip shape	highly polished special elliptical diamond
Stylus tip scanning radii	.0003 x .0007 inch
Tracking force (recommended)	1.3g vs 1.5g to 3.0g
Compliance	25Cu (for the original stylus)
Body shape	The LX-II has the same body shape as the ADC QLM, VLM and XLM carts, but is all black

Key Features

The Elliptical Diamond Stylus

This is the heart of the LX-II’s performance. That “highly polished special elliptical diamond” isn’t just a mouthful—it’s a real upgrade over basic conical tips. The asymmetrical contact patch (.0003 x .0007 inch) lets it ride the groove with more surface area in contact, reducing wear on your records and improving high-frequency retrieval. It’s not a line contact or micro-ridge, so don’t expect modern-level resolution, but for its time, this was serious geometry. The polish matters too: a smoother tip generates less noise and friction, which means less distortion and longer life. If you’re running a modest turntable setup and want to squeeze out a bit more clarity without upgrading the whole cartridge, this stylus delivers.

Shared Chassis Design

The LX-II doesn’t reinvent the wheel—it borrows one. Its body shape is identical to that of the ADC QLM, VLM, and XLM cartridges, which were higher-tier models in the ADC lineup. That means it fits standard 1/2-inch headshell mounts, aligns the same way, and probably shares internal mounting points and damping. The big visual difference? The LX-II is all black. No silver trim, no model badge flash. It’s like ADC took the same reliable housing, painted it matte, and dropped it into a more budget-friendly tier. One forum user even speculated it might be “the same body as the XLM with a downgrade in stylus,” or “the equivalent to the QLM-34.” That makes sense—if you already own an ADC tonearm or headshell, the LX-II would slide right in without any alignment surprises.

Collectibility & Value

The ADC LX-II cartridge itself doesn’t show up often on the market, and when it does, there’s no clear pricing pattern. No original MSRP has surfaced, and current resale values for the complete cartridge aren’t documented in the sources. However, the replacement stylus—still available from specialty retailers—is priced at $69.35 USD (LP Tunes, as of 2000–2025). That’s not cheap for a stylus, but it’s not outrageous either, especially considering the precision tip and the fact that ADC parts are no longer in mass production. This suggests there’s still a niche demand, likely from owners maintaining older ADC-based setups or DIYers hunting for compatible styli. Since no common failures or maintenance issues are recorded, we can only assume it’s as reliable as the rest of ADC’s build quality—but without service manuals or widespread user reports, any repair would be a gamble.