Shure SM86

A handheld condenser that took Shure's SM formula and gave it a diaphragm that needs electricity.

Overview

The SM86 is the microphone Shure built when the SM58's dynamic capsule wasn't the only answer for a stage vocal. It's a cardioid condenser. That one word changes how it behaves, how it's powered, and who it's for. Shure shipped it under the SM badge rather than in a separate product line.

The big difference from the dynamic SM mics is the power requirement. The range is generous, and the mic will run off essentially any board a working band is likely to encounter. But the SM86 is not a plug-into-anything microphone the way an SM58 is. If the house PA can't provide phantom, the mic doesn't work. Check that first.

Phantom power gets you a cardioid condenser with a tailored frequency response. The condenser's sensitivity and transient detail are paired with a directional pattern that keeps the monitor wedge and the drums out of the signal. Shure's own advertising positioned the SM86 as pushing the SM standard "to a new level," which is marketing copy. The intent is plain enough: familiar SM ergonomics with a different capsule underneath.

Shure built in real handling-noise countermeasures. Condensers are more sensitive than dynamics, and a sensitive capsule in a handheld body picks up every finger movement and cable thump. Mix (December 2002, p.148) noted the two-stage windscreen/pop filter arrangement and the three-point internal shockmount. It described the response as spanning 50 Hz to 18 kHz, which is wide for a handheld vocal microphone.

That's a thoughtful design choice, and it's the kind of thing that separates a mic designed by people who've actually mixed a live vocal from one designed on a spec sheet.

In-ear monitoring puts the vocalist's own voice directly in their head with nothing to mask problems. A mic that sounds harsh or uneven through a wedge might be tolerable, but through IEMs it's not. Shure positioning the SM86 for IEM duty suggests the tailored response was shaped with that close-up listening in mind.

That's a solid figure for a live vocal condenser, and it points to a reasonably quiet self-noise floor. That matters when a condenser runs at stage volume and the capsule's own hiss could ride under the vocal.

Period pricing puts the SM86 in a specific bracket. EQ (December 2002, p.40) listed it at $300 and noted it was the first addition to the SM series in over 10 years. That same piece also flagged the SM86's cardioid polar pattern and its 50 Hz to 18 kHz response, matching the manual's figures. At $300 in early-2000s dollars, the SM86 sat above the SM58 but well below the serious studio condensers of the day.

The SM86's pitch is the condenser sound without the fragility that usually comes with it. Whether it fully delivers is the kind of thing argued about in forums for years. The documentation makes the design intent clear: a rugged, phantom-powered cardioid condenser with handling-noise and pop suppression built in, tuned for vocals, and aimed at people who make their living on stage.

For a collector or a working engineer considering one today, the practical questions are simple. Does the rig supply phantom power? Is a condenser's sensitivity worth the handling-noise tradeoffs in a handheld? Are the SM-series ergonomics and roadworthiness worth a mic that won't work on a phantom-less board?