RFT DM 1331 1960S

compact, lightweight, and built to last. The DM 1331 was among RFT’s dynamic microphones of the mid-1960s, offering a full-range response and the brand’s characteristic smooth, unfussy tone. This example has been carefully modified to XLR, allowing direct use in modern recording setups without impedance adapters or transformers. It comes in its original box and remains in very good overall condition.

OPTICAL CONDITION

Clean exterior with only minor traces of use. The grille and body show no damage, lettering remains , and the original box is in a fair condition . overall A well-kept piece.

TECHNICAL CONDITION

Fully functional. The XLR conversion was neatly carried out and the mic performs well on standard preamps with stable signal and no noise issues. Capsule output and magnet structure remain strong and stable

BUILD & DESIGN

• Futuristic simple geometrical plastic body with integrated front grille, typical 1960s GDR design.
• Capsule: Dynamic capsule with omnidirectional pickup pattern, operating as a pressure transducer.
• Circuit: Passive dynamic design with high-impedance with.

TECHNICAL SPECIFICATIONS

Type: Dynamic (pressure type)
Polar pattern: cardioid
Frequency response: 50 Hz – 15 kHz
Sensitivity / Impedance: Originally high-impedance (~1 MΩ), modified to low-impedance balanced
Output: Balanced (via XLR)

SOUND CHARACTERISTICS

even across the midrange with gentle roll-offs at both extremes. The DM 1331 delivers a, open tone for speech, acoustic instruments, or general ambience capture. slightly fuzzy texture.

FREQUENCY RESPONSE

Estimated Frequency Response:
50 Hz – 15 000 Hz

• Fairly flat midband response
• Smooth presence region around 3–5 kHz
• Gradual roll-off above 12 kHz and below 100 Hz

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