Neumann U87 Ai

2490 €

Common name: Neumann U 87 Ai

Production Status: In production

The U 87 Ai is the evolution of the previous U 87 large diaphragm condenser microphone, manufactured by Georg Neumann GmbH from 1986. Both microphones belong to the “fet 80” series. The new version electronic is widely re-designed and the microphone uses the K 67 capsule, instead of the K 870 present in the U 87 microphone. The transducers have virtually the same electro-acoustical performances but the fixed electrodes of the two halves are electrically separated for the K 870 and joint in the K 67. This is because it was designed for the U 67 and its derived microphones. The 1960 K 67 was done in full brass while the U 87 A version uses some plastic parts (diaphragms rings). The U 87 Ai uses a DC/DC converter originally engineered for the U 89 to achieve higher voltage capsule polarization compared to the first version. The increased capsule voltage combined with the new amplifier design result in a significantly improved microphone sensitivity. The cone shaped microphone body is unchanged and the microphone is indistinguishable from the previous versions. All the switches present on the previous U 67 and U 87 are still present, a three positions polar pattern switch, two switches for – 10 dB PAD and a low pass filter, located at the head grille assembly. The microphone is available in nickel or dark matt finish. As with the U 67 and U 87 microphones, the U 87 Ai is a reference standard for pro-audio industry and it is one of the most widely used large diaphragm professional microphone.

Read George Shilling’s article about the history, features, and uses of this historic mic.

Electrical Characteristics

Frequency Response
20Hz - 20 kHz
Output Sensitivity
28 mV/Pa
Max SPL
117
Max SPL, THD:
0.5
Self Noise (CCIR)
23 dB
Self Noise (DIN/IEC)
12 dB-A
Output Impedance
200Ω
Recommended Load
1kΩ
Powering
Supply Current
0.8 mA
Alternative Powering

Switchable Options

Pad
10dB
Filter/EQ
200Hz

Physical Characteristics

Connector
XLR-3M
Connector notes
Available Colours
Nickel, black
Weight
500 g
Length
200 mm
Min diameter width
Max diameter
56 mm
Depth

Accessories

Included
Wooden box
Optional
EA87 suspension, WS87 windscreen, SG367 swivel mount