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CardioidMicrotech Gefell M 930 Ts

Cardioid Condenser Microphone

The M 930 Ts is a fixed-cardioid, large-diaphragm condenser with an output transformer. It is essentially a transformer-coupled version of the company’s popular M 930, and is intended to provide the same excellent performance specifications as the M930 with the additional benefits of a transformer-coupled output.

The transformer is said to provide desirable coloration, as well as providing a very low-impedance balanced output to drive long cable runs without signal degradation.

The amplifier circuit is a new design, created with the two goals of incorporating a large output transformer and retaining the the excellent performance characteristics of the M 930 transformerless circuitry.

The M 930 Ts capsule can be found in the M 930, UM930, and UM930 Twin. It has a 32mm outside diameter, with a diaphragm diameter of 28mm. The capsule is shockmounted within the headbasket, reducing the microphone’s sensitivity to structure-born noise.

The Ts model is slightly longer and heavier than its transformerless sibling, but remarkably attains the same low self-noise rating. The following table highlights the differences between the two microphones:

M 930M 930 Ts
Length118 mm130 mm
Weight210 g273 g
Sensitivity21 mV/Pa23 mV/Pa
Self-Noise7 dBA7 dBA
Max SPL142 dB142 dB
Impedance100 Ω40 Ω

The M 930 Ts is available in either Satin Nickel or Dark Bronze, and ships with a mic clip in a wooden case.

Optional accessories include a foam windscreen (p/n W 76), a pop filter (p/n P 110.35), and an elastic shockmount (in either finish).

Paul Strikwerda, 2012

Based on my criteria, the Gefell M 930 Ts scored 7 out of 8 points, plus a bonus point for size. Apart from lacking a high-pass filter (not a deal breaker) and a shock mount, it has everything a voice talent could hope for. It’s neutral without being boring, and when I listen to my audio samples, I hear myself and not some boutique sound.

The Microtech Gefell M 930 Ts is also known as: M930Ts.

The mic was released in 2011.


Pickup Patterns Pads & Filters
Cardioid (23 mV/Pa; 40 - 18,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 28mm
Capsule diameter: 32mm
40 Ohms (Low) Max SPL: 142 dB
Self-noise: 7.0 dB(A)
Weight Length Max Diameter Interface(s)
273g (9.63oz) 130mm (5.12'') 45mm (1.77'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48±4v

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