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Microtech Gefell M92.1S

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  • Specifications
Tube Condenser Microphone with cardioid polar pattern


The M 92.1 S is renowned for its high sensitivity and excellent signal-to-noise ratio. It has the typical warm, full-bodied sound of tube microphones that are preferred by vocalists and soloists.

The M 92.1 S vacuum tube condenser microphone is also suited for difficult radio play recordings as well as a supporting microphone for orchestra recordings.

The renowned pressure gradient transducer of the M 92.1 S (legendary M7) uses two large diameter gold-plated plastic dia-phragms. The vacuum tube preamplifier is equipped with a pentode working as a triode selected for its sonic characteristics.



-legendary M7 capsule

-large diameter gold-plated plastic membrane

-tube preamplifier with EF86t


The M 92.1 S is packed in a wooden case and comes with power supply N 920.1, connection cable C 92.1 and elastic suspension EA 92.

The microphone is available in a satin nickel or a black matt finish (optional, please contact us)

Tube-Condenser Microphone
M 92.1 S
Polar pattern
Acoustical operating principle
Pressure gradient transducer
Frequency range
40 ... 18000 Hz
Sensitivity at 1 kHz
19 mV / Pa
Rated impedance
200 Ω
Equivalent loudness level
due to inherent noise
CCIR 468-4 (qps)
25 dB
DIN EN 60651
15 dB - A
Signal-to-noise ratio 
(re 1 Pa at 1 kHz)
69 dB
79 dB
Max. SPL for THD ≤ 0,5 %
103 dB
Total dynamic range of the microphone amplifier
106 dB
DC power supply
120 V -
Anode current
1 mA -
Heater voltage
5,8 V -
Heater current
200 mA -
EF 86
Output connector
7- pin Tuchel C 70 / A
430 g
Dimensions (L x Ø )
197 mm x 42 mm


Frequency Responses


Polar Patterns





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