A vintage German dynamic microphone originally supplied for Union tape recorder systems in the early 1960s. The Union NM9/500 shares its complete housing design and construction with established German broadcast-era speech microphones - like the UHER M 133 , featuring identical body tooling, stand system, and overall design concept. Originally intended for high-impedance system use, this example has been converted to XLR and now integrates effortlessly into modern recording setups.

OPTICAL CONDITION
Very good vintage condition with light signs of age consistent with careful use. The housing, grille, and branding remain clean and well preserved.

TECHNICAL CONDITION
Fully functional and tested. Professionally converted to XLR from the original system connection. The microphone operates reliably and delivers the warm, articulate sound typical of transformer-coupled German dynamic microphones from this period.

THIS ITEM INCLUDES

• Union NM9/500 microphone
• Original carton box

BUILD & DESIGN

Rectangular plastic body with a full-surface metal front grille. Rear plastic housing and side cable exit are characteristic of early 1960s German system microphones.

• Capsule: Dynamic moving-coil capsule optimized for speech and vocal reproduction.
• Circuit: Transformer-coupled output, originally rated at 500 Ω, now adapted for use with standard microphone preamps. 2k at 1-4 ratio.

TECHNICAL SPECIFICATIONS
Type: Dynamic
Polar pattern: (not specified by manufacturer)
Frequency response: 85 Hz – 13,000 Hz
Impedance: 500 Ω )
Output: XLR (converted)

SOUND CHARACTERISTICS
Warm, speech-focused voicing with a controlled low end and excellent midrange articulation. Rather than extending into sub-bass territory, the microphone emphasizes clarity and body within the human voice range. A gentle transformer character adds weight and cohesion, while the upper frequencies remain detailed and smooth without harshness.
Particularly well suited for spoken word, narration, voiceover, radio-style vocals, and close-miked speech.

FREQUENCY RESPONSE

• Range: 85 Hz – 13,000 Hz
• Optimized for human voice
• Natural low-frequency roll-off
• Clear, smooth upper mids and highs

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