Microtech Gefell MT71S

MT 71 S: A "Studio" Approach Centered Around the M7 Capsule

The MT 71 S is based on an ambient pressure variation transducer architecture and features the renowned M7 capsule, designed to capture nuances with great finesse. The goal is clear: to offer a large-diaphragm condenser microphone aimed at production, capable of delivering very clear reproduction, with an improved signal-to-noise ratio and a sound signature that remains faithful to the source.

The design relies on a dual capacitor principle: a single copper backplate and two large-diameter gold-plated plastic diaphragms. Combined with a modern balanced output, this technical foundation aims for precise capture, excellent definition, and a sense of "presence" particularly useful in studio, broadcast, radio, or television contexts.

For Which Recordings and User Profiles?

The MT 71 S excels on solo vocals and solo instruments when you seek a clear and structured image without excessive coloration. Its cardioid pattern helps isolate the source, facilitating work in booths, home studios, or sets where reducing room bleed is desired.

Thanks to its high headroom (and pad), it is also suitable for more dynamic recordings: brass, percussion, guitar amplifier at a reasonable distance, or projected vocals. In spoken word production, its balance and clarity make processing (equalization, compression, de-essing) simpler and more predictable.

Controlled Presence and Electronics Designed for Precision

Cardioid Polar Pattern with Presence Boost

The cardioid polar response is accompanied by a slight presence boost reaching up to 4 dB around 7 kHz. Combined with moderate low-frequency attenuation, this curve contributes to the "present" character of the MT 71 S: clearer articulation, more readable attacks, and quicker placement in a modern mix. Maximum sensitivity is achieved on-axis, encouraging precise positioning to get the best from the microphone.

Transformerless Output: Transients, Dynamics, and Interference Rejection

The new transformerless circuit replaces the transformer with a balanced output stage. The result is a highly responsive transient response (useful for vocals, strings, acoustic guitars, and percussion), high rejection of high-frequency interference, and an extended dynamic range. This architecture also helps reduce intrinsic background noise while offering more headroom before saturation during peaks.

Pad and High-Pass Filter: A Microphone That Adapts to the Source

The switchable 10 dB pad lowers sensitivity to handle high levels without overloading the preamp input stage. The switchable high-pass filter helps limit proximity effect in close-miking and cleans up unwanted low frequencies (vibrations, breath noise, handling noise, or rumble). This is a real advantage for quickly switching from very close spoken voice to singing voice, or from a soft instrument to a more energetic source.

Studio Integration: Standard Connectivity and Phantom Power

The MT 71 S uses a 3-pin male XLR connector for standard microphone wiring and operates on 48 V phantom power (DIN 45596 and IEC 268-15 compliant). It integrates easily with an audio interface, console, mic preamp, or broadcast system while maintaining a reliable and professional signal chain.

Technical specifications

Frequency response - start	40 Hz	Capsule	Large Diaphragm
Frequency response - end	18 kHz	Connection	XLR
Category	studio microphone	Color	Grey
Directivity	cardioid

Type	transformerless condenser microphone	Signal-to-noise ratio (1 Pa at 1 kHz) (A-weighted)	80 dB
Polar pattern	cardioid	Max SPL for 0.5% total harmonic distortion	134 dB
Acoustic principle	ambient pressure variation sensor	Max SPL with 10 dB pad	144 dB
Frequency range	40 to 18,000 Hz	Total dynamic range of the microphone amplifier	120 dB
Pad	switchable 10 dB	Output connector	3-pin male XLR
High-pass filter	-15 dB at 90 Hz	Contacts	gold-plated
Sensitivity at 1 kHz	13 mV/Pa +/- 3 dB	Power supply	48 V phantom power (DIN 45596 and IEC 268-15)
Nominal impedance	150 ohms	Weight	285 g
Equivalent noise level (CCIR 468-4)	22 dB	Dimensions (L x diameter)	217 mm x 42/21 mm
Equivalent noise level (DIN EN 60651)	14 dB (A-weighted)	Finish	satin nickel or matte black
Signal-to-noise ratio (1 Pa at 1 kHz) (CCIR, weighted)	72 dB