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Up for sale is an absolute holy grail of vintage recordinghistory: a complete, 100% authentic Neumann Gefell UM57 Tube CondenserMicrophone System manufactured in East Germany (DDR)
This early-production specimen (Serial No. 1745) isbeing sold strictly AS-IS / UNTESTED as a pristine, untouched vintagetime capsule. No attempts have been made to power it up or test it with audioto prevent any potential damage to its delicate vintage components.
To provide absolute transparency, we have includeddetailed internal photos of both the microphone chassis and the PSU circuit,proving its flawless, unmolested structural state.
- Microphone Body: Authentic, early-production Neumann Gefell UM57 (Serial No. 1745) housing the legendary M7 capsule and original EC92 vacuum tube. Circuitry is 100% original, clean, and has never been modified or butchered.
- Capsule Condition: Visual inspection through the protective mesh confirms that the legendary M7 PVC Capsule retains its original golden diaphragm in clean, pristine condition, showing no signs of collapse, moisture damage, or decay
- Power Supply: Original RFT VEB Mikrofontechnik Gefell Typ N61V power supply (Serial No. 7840). Features the original grey metal case with its classic leather handle. The chassis is structurally perfect with zero dents. Front panel retains the original German lettering (Ein switch, mT 100mA fuse socket, and pilot light). Internal components look beautifully preserved.
- Cabling: Includes the proper, highly sought-after vintage Neumann multi-core microphone cable. Features a 6-hole female Tuchel connector at the microphone base matching to a 5-pin male Tuchel connector at the N61V power supply end.
- Original Case: Includes the authentic, original grey-lined wooden case. It beautifully retains its vintage hand-written factory artisan assembly/production numbers \"4438\" on the bottom rear.
Condition & Sale Terms
- Cosmetics: Striking vintage condition. The chrome body, grille, and PSU housing have been beautifully preserved with light, honest age-related patina.
- Terms of Sale: This system is sold strictly As-Is, Untested for parts or restoration. No returns or refunds. Perfect high-yield project for pro-audio technicians, professional studio engineers, or vintage microphone collectors.
Museum-Grade Shipping
Will be packed to absolute museum-grade standards. Themicrophone and power supply will be heavily double-boxed and isolated withmulti-layer high-density bubble wrap to ensure 100% safe international transit.Fully insured tracked shipping with signature required upon delivery.
Serious inquiries or Best Offers are welcome. Thank you.
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### **Technical Bench Testing (PSU Verified)**
To ensure maximum safety and transparency, the N61V powersupply chassis was opened and bench-tested using a precision digital multimeterunder no-load conditions. The readings are absolutely stellar and perfectlymatch factory specifications:
- Anode / B+ Voltage: Stable 128 V DC (Factory spec is~125V-130V).
- Heater / Filament Voltage: 16 V DC open-circuit. This isthe historically correct behavior for the N61V design; it confirms thetransformer and rectifiers are in pristine shape and will drop to the mandatory6.3V DC as soon as the EC92 tube load is applied.
The power supply is electronically healthy, stable, andready to safely power the system.
