Grundig GDM 314 – Vintage Dynamic Microphone – XLR Converted – Original Case

The GDM 314 is a vintage dynamic microphone originally intended for tape recorder, speech, and general-purpose recording applications. Its construction and voicing prioritise intelligibility, robustness, and controlled bandwidth rather than extended highs or exaggerated low end.

This example has been converted to balanced XLR, making it fully compatible with modern input and equipment while retaining its original character. The microphone is housed in its original Grundig case, a nice period-correct addition.

OPTICAL CONDITION

Very good vintage condition with light signs of age and use. The microphone body and grille are intact and clean. Original case shows normal wear consistent with age.

TECHNICAL CONDITION

Fully functional and tested after XLR conversion. The microphone passes signal correctly and behaves as expected for a vintage dynamic design.

THIS ITEM INCLUDES

• Grundig GDM 314 microphone (XLR output)
• Original Grundig storage case

BUILD & DESIGN

• Solid metal housing with classic Grundig industrial styling
• Front-address dynamic capsule
• Balanced XLR output (converted from original connector)
• No switches, straightforward signal path

TECHNICAL SPECIFICATIONS

Type: Dynamic microphone
Polar pattern: Cardioid (typical for the GDM series)
Output: Balanced XLR

SOUND CHARACTERISTICS

The GDM 314 offers a clear, forward midrange with controlled low end and a gently rolled-off top end. It is well suited for applications where focus are is important than extended bandwidth.

Typical uses include:

• Guitar amplifiers
• Utility and character recording tasks

This is a practical-sounding vintage dynamic microphone.

FREQUENCY RESPONSE

Estimated frequency behaviour based on in-room testing:

• Approximate usable range: ~100 Hz – 10 kHz
• Presence emphasis in the midrange
• Natural high-frequency roll-off above the upper midrange
• Low-frequency attenuation toward the bottom end

(Estimated values based on measurement in our setup; not an anechoic specification.)

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