Grundig GDM 314 (1969–1970s)
The Grundig GDM 314 is a vintage dynamic microphone from the company's GDM line. It was built in Germany for tape recorder, speech, and general-purpose recording use. Documentation is thin and there is no complete spec sheet in the archive, but a handful of details survive across collector listings and period references.
Here is what is known. The GDM 314 uses a dynamic element with a cardioid polar pattern. Its 2 m cable ends in a five-pin DIN connector with a built-in impedance converter, so it can run at either 200 ohms or 10 kOhms. Frequency response is listed at 80 Hz to 15 kHz. The body is plastic, which collectors describe as light and well-crafted, and the mic shipped in a durable lined box. Collectors reference a 1979 Grundig data sheet covering the GDM-308, GDM-314, and GCM-309, but the document itself was not available for this page.
The production dating has a minor conflict. Some listings point to 1969, others to the 1970s. Both are plausible for a mic of this type, and the 1979 data sheet suggests the model stayed in the catalog well into the decade. The GDM 314 appears alongside the GDM 313 in at least one collection list, and a related model, the GCM 309, has its own hifi-wiki page. No explicit relationship between these models is documented.
A Russian marketplace listing shows the GDM 314 selling with a stand ("с ножкой") for 8,100 rubles. A German listing from November 2023 had one with a base at €20. A Reverb sale shows $58.20 for a unit in "Used - Excellent" condition, and a like-new specimen in its original case was offered through partsvintageaudio.com. One YouTube demo records an electric guitar through a fuzz pedal using the GDM 314 into a Tascam US-800, which is a long way from the mic's original speech-recording purpose.
No output sensitivity value, dimensions, weight, or capsule details are documented. No original retail price is recorded, and no period reviews of this specific model have surfaced. What survives is a sturdy, workmanlike German dynamic mic from the late 1960s/1970s — one that collectors still seek out for its build and its distinctive DIN-terminated design.
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