REFURBISHED ORIGINAL Grundig B20 Late 1960s - XLR

The Grundig B20 / small-format microphone built with intent for quality and durability. Closely aligned in concept with compact handheld designs such as the Telefunken M9A, the B20 follows a similar approach in form, handling, and acoustic focus. Beneath its modest design lies a capsule that delivers far more than expected.

OPTICAL CONDITION
Very good vintage condition. The front plastic housing is clean with only light signs of age. the back plastic housing has some sign of use. The front grille is intact and evenly seated. Logo badge remains well preserved. Cable shows typical aging but retains its original woven character.

TECHNICAL CONDITION
Fully working. The microphone has been tested and delivers a clear, balanced signal.

Converted to XLR with a reinforced shielding termination using a metal ring

THIS ITEM INCLUDES

The microphone alone

BUILD & DESIGN
The B20 features a rigid molded plastic housing with a smooth, slightly curved profile that sits comfortably in the hand. The front-facing grille is tightly woven metal, giving both protection and a focused acoustic entry point. The microphone is handheld by design, with no threaded mount. The original cloth-covered cable is preserved and adapted to XLR, maintaining the vintage aesthetic while improving usability.

• Capsule
  Dynamic capsule, optimized for speech and close-range applications. The design emphasizes clarity and natural tonal balance rather than exaggerated coloration.
• Circuit
  Passive dynamic design. No internal amplification—signal integrity relies entirely on capsule design and transformer characteristics.

TECHNICAL SPECIFICATIONS

• Type: Dynamic
• Polar Pattern: Likely cardioid (based on typical design and usage)
• Frequency Response: Approx. 100 Hz – 10,000 Hz
• Sensitivity / Impedance: Not officially specified (typical for vintage Grundig dynamics)
• Output: Balanced (converted to XLR)

FREQUENCY RESPONSE

Estimated Frequency Response:
100 Hz – 13,000 Hz

• Smooth presence region without sharp peaks
• Gentle high-frequency extension for clarity
• Controlled low-end with warmth, no sub-heavy buildup

SOUND CHARACTERISTICS

A remarkably natural and balanced dynamic microphone. The B20 delivers a smooth midrange with enough presence to capture detail without harshness. High frequencies extend cleanly, offering clarity in close-miking situations, while the low end provides warmth without becoming boomy or exaggerated.

The microphone performs especially well in close placement, where it reveals a surprisingly refined and detailed character. Despite its compact form, it holds its own in applications such as speech recording, voice work, or even controlled studio use where a neutral and honest tone is desired.

EXCEPTIONALLY GOOD AT
This microphone shows surprising values of

low noise

high sensitivity

SPL handling

These all contribute to a much deeper dynamic range than accepted from vintage backlit designs of the time. earning this model the place it deserves in the HI-FI category.

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