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Special Order
Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. Due to the special nature of this item, we order each unit fresh from the factory, exclusively for you! Lead times may vary so please chat, call or email for up-to-date inventory status.

SKU

57838

Gefell UM 900 Multi-Pattern Tube Condenser Mic - Nickel

Tube condenser microphone with five switchable polar patterns - featuring legendary M7 capsule - nickel
MFR# 211152

Product Description

The Gefell UM 900 is the first switchable pattern, valve condenser microphone that can be connected to industry standard 48 volt phantom powering using a normal 3-pin XLR microphone cable. This is made possible by an advanced circuit design for the amplifier and internal power supply. The pickup capsule uses a traditional, proven design with two large, gold plated plastic membranes.

Three switches are located around the body of the UM 900. The switch in the front selects the polar pattern: omni, wide cardioid, cardioid, hyper cardioid and figure 8. Located 120 degrees to each side are switches for gain adjust and low frequency roll-off.

The unusual shape of the microphone's body is especially designed to minimize undesirable reflections of sound toward the pickup element.

Acoustic influences which could result from the housing resonance and/or mechanical vibration are reduced by the robust construction and by a special fixture within the microphone's housing which dampens vibration.

The high sensitivity and low noise of the UM 900 make it especially suitable for vocal and speech pickup in professional sound recording studios, scoring stages and broadcast studios. The 5 pickup patterns allow the microphone to be tailored to a wide variety of applications. For example, the microphone can be used as an overall pickup for a large orchestra or it can be used as a solo or spot mike for individual instruments. It may also serve as an announce microphone where its proximity effect may be desirable.

The direction of maximum sensitivity is radial to the microphone body, i.e. side addressed. The front of the microphone is indicated by the model number and the pattern selector switch.

The pick-up capsule is mounted in a large, acoustically open headgrill which prevents mechanical vibration interference. This gives the microphone a clean, colorless sound characteristic.

The internal vacuum tube amplifier of the UM 900 can be powered by any external 48 volt phantom supply which can provide at least 4 mA of current.The amplifier uses a specially selected vacuum tube.An internal transverter provides all the necessary voltages.The low impedance output is implemented with an operationalamplifier and balanced output transformer.

The UM 900 can be connected with a cable of up to 150 m length without any effect on sound quality.

Product Specifications

ConditionNew
Package ContentsIncludes a wooden
Length200 mm
Diameter75 mm
Unit Weight900 g
Tube or Solid StateTube
Transducer TypeCondenser
Polar PatternBi-Directional / Figure-Eight, Cardioid, Hyper-Cardioid, Omni-Directional, Wide Cardioid
Number of MicrophonesSingle Microphone
ImpedanceRated impedance: 30 ohms
Frequency Range40 Hz - 18 kHz
input_pad-10 dB
SensitivityCardioid: 40 mV/Pa
Max. SPL130 dB (0.5% THD); 140 dB (0.5% THD) with pad

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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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