Neumann & Gefell - UM57 - Nr.991 - Tube Condenser Microphone - Serviced

For sale: a Neumann & Gefell UM57 tube condenser microphone (No. 991), a rare and highly collectible vintage studio microphone renowned for its warm tube sound, exceptional detail, and historic significance in professional recording. 

This microphone has been serviced with a replacement tube installed to ensure reliable operation.

Has also been serviced (recapped) by the previous owner.

Cosmetic condition:

The microphone is in vintage used condition.

• Honest signs of age and professional use
• Typical cosmetic wear consistent with a vintage studio microphone
• Logo Faded
• Original character and patina preserved
• Overall well-maintained for its age

🎤 Functional status

✔ Fully working
✔ Tube replaced
✔ Audio output verified
✔ Ready for studio use or collection

Specs:

Type: Large-Diaphragm Tube Condenser Microphone
Capsule: M7 Dual-Diaphragm PVC Capsule
Tube: EC92 Triode
Transformer: Gefell T551 Output Transformer
Polar Patterns:

• Cardioid
• Omnidirectional
• Figure-8 (Bidirectional)

Frequency Response: 30 Hz – 18 kHz
Sensitivity: 8 mV/Pa
Output Impedance: 200 Ω (Low Impedance)

Length: 190 mm (7.48")
Diameter: 42 mm (1.65")
Connector: 3-pin XLR Male
Power Supply: External Tube Power Supply Included

Dimensions (LxWxH): 30x22x20cm
Weight: 6 Kg
Volts: 220v (If it’s 200V or higher, you’ll need an adapter in the USA)

We ship worldwide.
For international shipping, import fee's apply. These vary per countrie, and are for the buyer to pay.
-Shipping in the EU up to 30 KG (max)
-Shipping outside of the EU up to 20 KG (max) Shown costs might vary. Please ask us for a shipping quote for the best rates!
-We kindly ask you to reach out for the best shiping rates. As rates vary per shipper, we can ask custom shipping quotes.

Please note: ‘’Whenever an item exceeds the weight noted above. Please ask for a shipping quote before making a purchase. The shipping costs are estimated in our shop because we do not know the shipping address. 

Picking up the item is also possible. It can be picked up in Alkmaar 

Delivery by us is also possible in some cases. Please reach out to us for more information about deliveries 

State of listing: If a listing is listed ''for parts or not working'' returns are not accepted.

When we offer our products with the notice ''Serviced'' or ''Fully serviced'' that means the device is either ''serviced'' with a new belt, and cleaned the pots, Or ''Fully serviced'' recapped, Quiescent current adjusted etc as expected from a full service