ADC RQLM36

That crisp, articulate midrange you're chasing might come down to a tiny diamond riding in a 40-year-old groove.

Overview

The ADC RQLM36 is a replacement stylus - just the needle and cantilever assembly - made for a range of ADC's moving magnet cartridges. It's not a cartridge, not a turntable, not a full assembly. It's the part that touches the record and traces the modulations in the groove. ADC doesn't sell the RQLM36 as a standalone product today. Third-party replacements carry it on, like the one from LP Gear, which markets its version as delivering "natural sound quality, precision tracing of record grooves and very good rendition of voice, music and harmonics." If your ADC cartridge still works but the needle has gone dull, this is the piece that brings it back.

It's listed under several name variants - ADC RQLM-36, ADC RQLM 36 - so don't get tripped up by hyphens or spacing. It's a replacement part, which explains why so little historical context exists. ADC didn't promote it like a flagship model. It was a service component, swapped in quietly when the old one wore out. For owners of vintage ADC cartridges, it's still a critical link in keeping the original sound. ADC built a reputation for high-resolution, low-mass cartridges during the analog heyday, so the right stylus on the arm matters.

Specifications

Key Features

Special elliptical diamond tip

The RQLM36 uses a special elliptical diamond tip with scanning radii of .0003 x .0007 inch. Those tight dimensions let it track high-frequency information deep in the groove walls better than a conical tip could. The shape was a step up from basic elliptical designs, with improved contact on the groove surface and less distortion, especially on worn or densely cut records. The tip is described as "highly polished," which likely helps tracking and reduces wear on both the stylus and the vinyl.

Thin-wall aluminum alloy cantilever

The stylus is mounted to a thin-wall aluminum alloy cantilever, which aims for a balance between rigidity and low mass. Aluminum was a common choice in mid-to-high-end cartridges of the era. It's light enough to respond quickly to groove modulations and stiff enough to avoid flexing and smearing detail. The combination of this cantilever and the elliptical diamond suggests the RQLM36 was intended for accurate, dynamic playback rather than casual listening.

Compatibility across ADC models

Sold today as a replacement stylus, the RQLM36 is listed as fitting a wide range of ADC cartridges, including the ADC RSQ30, ADC K8, ADC RSQ31, ADC RSQ32, ADC RSQ33, ADC RQLM30, ADC RQ30, ADC RK5E, ADC RP32, ADC RSQ34, and the ADC RQLM36 itself. It also fits later variants like the ADC QLM30/III Mk III, ADC RK8, ADC K8E, ADC RSQ36, ADC RQ36, ADC QLM33mkIII, ADC QLM34, ADC QLM34mkIII, ADC K5E, ADC P32, ADC Q36, and ADC QLM36mkII. That cross-model support makes it a practical choice for anyone maintaining older ADC gear. One stylus covers many cartridges, so there's no need to hunt down a rare, model-specific part.

Collectibility & Value

As a replacement component, the ADC RQLM36 isn't collectible in the traditional sense. Nobody's displaying it in a case. Its value lies in utility. The LP Gear replacement version of the RQLM36 lists for $73.00, reflecting the cost of modern diamond grinding and quality control. Other sellers offer generic stylus assemblies advertised as compatible with ADC QLM models (including the RQLM36) for as low as $18.89. The gap in price likely reflects differences in build quality, tip polishing, and cantilever alignment. Owners report that a properly matched, well-made replacement preserves both sound quality and vinyl longevity.

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