REFURBISHED - Beyerdynamic M 81 BASS Microphone- XLR

TRUE VINTAGE BASS

Produced in Germany (initially in Berlin, later at Beyerdynamic’s Heilbronn facility) during the late 1960s to early 1970s, the M81 dynamic microphone stands out as one of Beyerdynamic’s most robust instrument-stage models. Built like a tank and designed to handle heavy duty use, it remains a sought-after gem for engineers who know value in vintage metal-bodied dynamics. with a special quality for bass guitar AMP

CONDITION

Used - Refurbished

Foam replaced

Converted to XLR

BUILD & DESIGN

The M81 lives up to its reputation for durability. Its body is made from thick die-cast metal, consisting of two interlocking parts joined with a flat connection and spacer reminiscent of an engine head gasket — complete with metal locating pins holding it perfectly in place. This design not only gives the mic a unique visual character but makes it exceptionally resistant to shock, vibration and rough handling.

Its dense weight and compact form factor make it ideal for mounting on bass cabinets, guitar amps, and heavy-use stage drums. The original dynamic cardioid capsule and internal wiring maintain the resilience Beyerdynamic engineered into these models of the era.

TECHNICAL SPECIFICATIONS

Type: Dynamic
Polar Pattern: Cardioid
Frequency Response: Tailored for rich low-end and strong proximity effect
Impedance: ~500 Ω
Output: Balanced XLR (modified)
Features: Ultra-robust housing, thick metal construction, vintage character

SOUND CHARACTERISTICS

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• Estimated Range: 40 Hz – 15,000 Hz
• Low-End: Strong presence and weight when used close
• Midrange: Slight vintage coloration adds character
• High-End: Not overly bright; retains enough definition without harshness

The M81 is definitely bass-centric, showing exceptionally strong proximity effect when placed close to the source. It delivers full bodied low-end with a nice vintage saturation — not overly warm like classical bass mics, but full and punchy.

Because of its metal body and robust capsule design it captures the low-frequency drive of bass cabinets or kick drums beautifully, while maintaining enough mid-clarity and top-end shine to keep things defined. Think of a classic bass mic aesthetic, yet with more articulation and less of the deep syrupy warmth you might associate with vintage ‘boom’ mics.

It also works surprisingly well on vocals — especially those needing a bit of girth and presence, rather than ultra-crispy top end. The solidity of the build translates into a consistent performance under stage conditions, making it a real all-round performer.

Usage example: Close-miked bass guitar cabinet, aimed at the cone centre, yields tight low end and focused punch. On a vocal, using a proximity setup gives that rich bottom while retaining intelligibility thanks to its character

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