Heil Sound PR37 Vocal Dynamic Microphone

Heil Sound PR 37 — Supercardioid Dynamic Vocal Microphone for Live & Recording

The Heil Sound PR 37 is a handheld dynamic supercardioid microphone tuned for vocalists who need their voice to cut through a busy live mix without sacrificing transparency. Built around a large 1.5" dynamic element housed in a rugged metal body, the PR 37 is the next step in Heil Sound's evolution of vocal microphones following the PR 35 and PR 22. Designed for lead vocalists, podcasters, and engineers who demand studio-grade clarity from a stage-ready dynamic mic, this instrument keeps studio clarity on a stage-grade chassis.

What Sets the PR 37 Apart

Where many live dynamics sound dull or boxy, the PR 37's frequency response delivers smooth low mids paired with an enhanced upper-mid presence, so vocals of all kinds shine through effortlessly on loud stages and in radio-ready recordings. A supercardioid pickup pattern combined with -40 dB rear rejection at 180° off-axis means bleed from monitors, drums, and crowd noise is dramatically reduced, while an internal stable mounting-system design lowers handling noise without forcing you to reach for an external shock mount.

Polar Pattern & Stage Isolation — Cut Through the Mix

The polar pattern is the single most important factor in how a vocal mic behaves on a loud stage, and the PR 37 is engineered to keep your voice front-and-center while rejecting what comes from behind and the sides. This is exactly why vocalists working smaller club gigs with low ceilings, big drum kits, and wedge-heavy monitor rigs turn to supercardioid designs.

• Polar Pattern: Supercardioid — focused front pickup that pushes competing stage sources away from the vocal channel.
• From 180° behind the capsule, sound drops by -40 dB — aggressive rear rejection that engineers working wedge-heavy stages notice immediately.
• Frequency Response: 40 Hz – 18 kHz — full-range vocal capture with smooth low mids and enhanced upper-mid presence so the voice sits forward in any mix.

Build & Handling — Built for the Road

Touring vocalists and traveling podcasters need a mic that survives daily handling, accidental drops, and crowded mic stands. Heil puts the PR 37's large-diameter dynamic element inside a stable mounting system designed to reduce handling noise, all wrapped in a rugged metal body that shrugs off the wear-and-tear of constant live use.

• Element Type: Dynamic (1.5" large-diameter capsule) — no phantom power required and high rejection of stage bleed compared with condensers.
• Weight: ~347 g (12.25 oz) — substantial feel in the hand that helps reduce slippage and feedback during energetic performances.
• Singers pushing 140 dB of SPL into the capsule will not hear the element flinch — this dynamic handles screaming belters, close mic'd guitar cabinets, and aggressive podcast moments without distorting.

Connectivity & Output — Drop-In Pro Compatibility

The PR 37 connects through a standard 3-pin XLR cable and presents a balanced 370-ohm nominal impedance that drops into any professional mixing console, audio interface, or stage rack with no extra adapters.

• Output Connection: 3-pin XLR (balanced) — universal compatibility with mixers, audio interfaces, and stage snakes.
• Nominal Impedance: 370 ohms balanced — stable signal transfer across long XLR cable runs on touring rigs.
• With a sensitivity reading of -48.9 dB @ 1 kHz, the front-of-house engineer receives the same headroom expected from industry-standard live dynamics, meaning the channel can be pushed hard before preamp noise becomes a concern.

Who Is the PR 37 For?

Built for lead vocalists, live-sound engineers, podcasters, and content creators who need a single microphone that excels on stage, in the home studio, and on the road, this instrument carries its vocal signature from one environment to the next. It shines for singers performing in small clubs with high stage volume, where the supercardioid rejection and rear-noise attenuation keep the vocal intelligible even with heavy wedge bleed. Podcasters and YouTubers benefit from the same clarity plus the internal shock-mounting system that minimizes handling noise when passing the mic during interviews. The PR 37 also doubles as a capable home-studio tool for capturing acoustic guitar, accordion, or saxophone — anywhere you want a focused, off-axis-rejecting source.

Heil Sound — American Microphone Craftsmanship

Heil Sound has been building professional microphones and audio accessories in the United States for decades, with a catalog that became essential kit for live vocalists, broadcasters, and ham radio operators alike. The PR 37 continues that lineage as the latest evolution of the company's PR vocal-mic family, building on the proven reputations of the PR 35 and PR 22 with an even more transparent, mix-ready top end.