ADC QLM 32 Mk. II (circa 1978–1984)
5.75 grams of moving iron that asked for patience and paid you back in clarity - once you found the sweet spot.
Overview
The ADC QLM 32 Mk. II never gets its own thread on the forums, never headlines an auction, and never gets pulled out of a drawer with a story attached. It just sits there, 5.75 grams of moving iron, waiting for a turntable that still works. ADC built it from roughly 1978 to 1984. It did what the QLM line was designed to do: put a competent, serviceable phono cartridge in front of people who cared about records but weren't going to spend flagship money on a stylus assembly.
The headline spec is the weight. At 5.75 grams, the QLM 32 Mk. II is light enough to sit comfortably on the stamped arms and plastic plinths that dominated mid-fi turntables of the era, and light enough that resonance behavior with a decent low-mass arm stays predictable. That comes from the induced magnet - moving iron - generator inside. Rather than dragging a permanent magnet through the groove, ADC's design uses a soft iron armature moving in a fixed magnetic field. That keeps the moving mass low and lets the cartridge track with less inertia. The fact sheet lists the principle as "Induced Magnet (Moving Iron, Anschluss als MM), according to some sources", because ADC's own literature and outside documentation haven't always agreed on how to classify it. Functionally, it loads and behaves like a moving magnet cartridge, so it plays nicely with the 47 kOhm inputs on any standard phono stage.
The stylus is where the QLM 32 Mk. II earns its keep.
What the QLM 32 Mk. II does not do is flatter a bad setup. The recommended tracking force band runs from 2.0 to 4.0 grams. That is a wide window, and it reflects the era's tolerance for heavier arms and less-than-rigid suspensions. This cartridge also wants to be dialed in, not dropped on and forgotten. Period listings in HiFI-Stereo (1977, p.79) show ADC's contemporaneous phono cartridges carrying tracking-force ranges in the same 2.0-4.0 g territory, which makes the QLM 32 Mk. II's band typical for the company's line in that era. Get it wrong and the highs turn glassy and the bass goes soft.
Key Features
Induced Magnet (Moving Iron) Generator
ADC's induced magnet design is the technical heart of the QLM 32 Mk. II. Instead of a permanent magnet mounted on the cantilever, as in conventional moving magnet cartridges, the magnet stays fixed inside the body. A lightweight soft iron armature moves between the pole pieces in response to the groove. The advantage is reduced moving mass, which translates to better tracking and less record wear at a given tracking force. The trade-off is that the generator is more sensitive to the mechanical quality of the cantilever assembly and the precision of the pole piece geometry. That is one reason induced magnet cartridges have a reputation for being fussy about setup. The fact sheet flags the principle as "according to some sources," which is fair. ADC's own documentation sometimes blurred the line between induced magnet and moving iron, and the two terms describe the same basic mechanism from different angles.
Elliptical Diamond Stylus
The 32 Mk. II uses an elliptical diamond, a geometry that traces the vertical modulations in the groove wall more accurately and, when properly aligned, extracts high-frequency information that a conical tip simply rounds off. The fact sheet lists two slightly different dimensions across sources: approximately 0.01 mm × 0.018 mm in one, 0.008 mm × 0.02 mm in another. Both describe a fine-line elliptical contact, and the discrepancy is more a documentation artifact than a functional difference. Collectors chasing a replacement stylus should match the original spec as closely as possible rather than splitting hairs over the last thousandth of a millimeter.
5.75-Gram Body Weight
That low mass helps keep the arm/cartridge resonance in a usable range and reduces the load on the arm bearings.
2.0–4.0 Gram Tracking Force Window
The recommended tracking force range is broad, 2.0 to 4.0 grams. The QLM 32 Mk. II was designed to work across a wide range of turntables. Running it too light invites mistracking on loud passages. Running it too heavy accelerates stylus wear and can dull the high end over time.
Historical Context
ADC built the QLM 32 Mk. II from circa 1978 to 1984. The fact sheet does not state an explicit hierarchy. The family members are listed as discovered models rather than as a documented lineup, so the relative positioning of the QLM 32 Mk. II within ADC's catalog is inferred from the model numbering rather than confirmed by a period price list or catalog entry.
The QLM 32 Mk. II was never a halo product. It was a working cartridge, sold to people who needed a reliable replacement for a worn stylus or wanted a modest upgrade from whatever came fitted to their turntable at the factory. It trades today quietly on the secondhand market, under the radar of flashier moving magnets. It doesn't command collector premiums.
Collectibility & Value
The QLM 32 Mk. II is not a collector's cartridge, and the market reflects that. A recent eBay listing showed one selling for EUR 84.50. Replacement styli are easier to find than you might expect for a design that stopped production four decades ago. Aftermarket versions like the 1230-DE have been spotted at $23.42, while an original-spec compatible stylus - model 1231, listed under the QLM 33 MkIII - fetched $47.82. A used replacement stylus also appeared at EUR 21.90, which suggests a modest but persistent supply chain.
There's no evidence of rampant failure modes or chronic shortages, which keeps prices grounded. The cartridge body itself is sturdy. Nothing in it wears out except the stylus, and the induced magnet generator has no known endemic faults. The stylus tip, however, cannot be cleaned back to health once worn. A used QLM 32 Mk. II with an unknown-hours stylus is a gamble. Factor the cost of a replacement into any purchase, and if the seller can't document stylus condition, assume the worst.
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