LCT 550 Capsule

LCT 550

Go Extreme

0 dB (A) self-noise from electronics and circuitry - and always a matched pair.


The LCT 550 is the first and only large diaphragm studio microphone ever to achieve 0 dB (A) self-noise from electronics and circuitry. 

Capture extremely weak signals

The Austrian-developed LCT 550 sets new standards in terms of more than just self-noise. Its superior dynamic range guarantees the best-possible results even in challenging situations. Our unique zero self-noise architecture allows to capture extremely weak signals with great precision and detail.

LCT 550 in shock mount
LCT 550 in shock mount

Perfect Match technology

The future of stereo recording

Any LCT 550 will always form a matched pair. Add another one and you will get a "matched triplet" ... and so on. Every single LCT 550 undergoes a series of measurements followed by an adjustment of the polarization voltage to achieve exactly the same sensitivity in every microphone.

LCT 550 Matched pair

Illuminated user interface

Easy handling in dark environments

The illumination of the user interface makes possible quick and accurate setup of the microphone - even in total darkness it is easy to check or change the settings using the noiseless push-buttons.

LCT 550 illuminated user interface

Low-cut and attenuation

Adapt to every situation

Low-cut: linear, 80 Hz, 160 Hz
Attenuation: 0 dB, -6 dB, -12 dB

LCT 550 pre-attenuation settings
LCT 550 pre-attenuation settings

Low-cut: linear, 80 Hz, 160 Hz
Attenuation: 0 dB, -6 dB, -12 dB

Automatic Attenuation and Clipping History

The LCT 550 is packed with useful features that make your recording workflow easier!

LCT 550 Automatic attenuation
LCT 550 Automatic attenuation

The LCT 550 is packed with useful features that make your recording workflow easier!

Sound samples

What the experts say

"With LEWITT mics, there are no boundaries!"

Julian Bunetta

Julian Bunetta is a poular songwriter, producer and musician, who has written and produced many songs with prominent artists such as One Direction, Fifth Harmony, Chris Brown, Leona Lewis,...

Julian Bunetta

"A welcomed addition to my collection"

Brian Vibberts

Grammy Award winner Brian Vibberts is an audio engineer, who recorded or mixed multi-platinum artists including Michael Jackson, Aerosmith, Bon Jovi, Green Day, Eric Clapton, Mariah Carey,...

Vibberts with his LCT 550 reference studio condenser mic
Vibberts with his LCT 550 reference studio condenser mic

"The LCT 550 gives me crystal clear vocals and picks up all the breathy, microtonal nuances in the voice."

Bibi McGill

Belinda "Bibi" McGill is best known as the lead guitarist and musical director of Beyoncé's all-girl musical ensemble The Sugar Mamas.

Bibi McGill singing through her LCT 550 reference condenser studio mic

"I love the LCT 550. It is super quiet, natural and warm.”

Fish Herring

Fish Herring is a guitarist and producer, worked with artists such as Prince, Christina Aguilera, Mariah Carey, Tupac, Nas,... 

Fish Herring with his LCT 550 reference studio mic

"The LCT 550 is the Swiss army knife of condensers and you can really get clarity out of any instrument with it!"

Aaron Gillespie

Aaron Gillespie is best known for being the drummer and clean vocalist for the metalcore band UnderOath,

Aaron Gillespie uses the quitest studio condenser microphone

What's in the box

LCT 550 box content

"I have to conclude that the LCT 550 is a very capable all-rounder that delivers an honest yet musically satisfying sound in just about any recording situation you can imagine. It is extremely quiet, as the specifications imply, which means it can be used for demanding work where the sound sources are not necessarily very close to the microphone."

Paul White, Sound on Sound 

LCT 550

Super-low self-noise

The LCT 550 is the first and only large-diaphragm studio microphone ever to achieve 0 dB (A) self-noise*. It captures even extremely weak signals with great precision and detail. Our precision-engineered capsule captures every nuance of your voice or instrument in a musical way; with unparalleled depth and clarity. Perfect Match technology involves precise calibration of the capsule and electronics so that any two microphones will form a matched pair. These characteristics make the LCT 550 a perfect match for stereo and surround applications. The LCT 550 offers Clipping History, Automatic Attenuation, three pre-attenuation settings and three low-cut filter settings. Engineered in Austria with sophisticated technology, for clear, modern sound, all combined in a sturdy enclosure.

* 0 dB (A) electronics only, 3 dB (A) according to IEC 60268-1 due to Brownian motion



Condenser, externally polarized

Acoustical operating principle

Pressure gradient transducer


3 micron gold sputtered Mylar

Transducer Ø

25.4 mm, 1 in

Polar pattern


Frequency range

20 ... 20,000 Hz


36 mV/Pa, -29 dBV/Pa

Equivalent noise level

3 dB (A)

Max. SPL for 0.5 % THD

143 dBSPL, 0 dB pre-attenuation

Signal / noise ratio

91 dB (A)

Dynamic range

140 dB (A)

Pre-attenuation pad

 0 dB
-6 dB
-12 dB

Low-cut filter

80 Hz (12 dB/oct)
160 Hz (6 dB/oct)

Internal impedance

150 Ω

Rated load impedance

1,000 Ω

Supply voltage

48 V +/- 4 V

Current consumption

5.5 mA 

Mic enclosure

Zinc die cast


Gold plated 3-pin XLR

Microphone dimensions

158 x 52 x 36 mm, 6.22 x 2.04 x 1.42 in

Microphone net weight

425 g, 14.9 oz

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Microphones measured according to: IEC 60268-4
Phantom power according to: IEC 61938
Noise measurement according to: IEC 60268-1