Tube Condenser Microphone
with cardioid polar patterns
  • legendary M7 capsule
  • large diameter gold-plated plastic membrane
  • tube preamplifier with EF86

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 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 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.

The N 920.1 power supply provides the operating voltage for the vacuum tube condenser microphone. It can be powered from AC mains with a primary voltage of 115 or 230 volts / 50 or 60 Hz. For cable lengths over 50 meters it is recommended to have yourservice provider set the heater voltage of the power supply to 5.8 volts. The N 920.1 is equipped with an on/off-switch, a 7-pin Tuchel connector that powers the microphone and a 3-pin XLR connector with integrated line voltage selector.

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


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



Microphone M 92.1 S in Suitcase   L x B x H   450 x 350 x 160 mm
Power supply N 920.1
Connection cable C 92.1
Elastic suspension EA 92
satin nickel
Order-No. 211189




black matt Order-No. 211190

M 92.1 S schwarz_kl


EA 92 schwarz_100 Pixel


P 110 with Gooseneck

Popscreen, diameter 110mm

P110 kl
PO 70

Popscreen; diameter 130mm

W92 Order-No.202402

Windscreen for M990, M92.1 S, UM92.1 S,
M92 S, UM92 S

MH80 satin nickel

Microphone holder
swivel mount for M92.1 S, UM92.1 S, M990, UMT800, UM900, UM930, UM930 twin

MH 80 nickel matt_100 Pixel
MH80 black matt

Microphone holder
swivel mount for M92.1 S, UM92.1 S, M990, UMT800, UM900, UM930, UM930 twin

MH 80 schwarz_100 Pixel