Lewitt LCT 550 Large Diaphragm Studio Condenser Microphone


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"The World's Quietest Microphone," the Lewitt LCT 550, is the first and only large-diaphragm studio microphone ever to achieve 0 dB-A self-noise. That makes it possible to capture even extremely weak signals with great precision and detail.

Lewitt's Austrian-developed LCT 550 sets new standards in terms of more than just self-noise. A dynamic range of 140 dB-A guarantees the best-possible results even in challenging settings. The three pre-attenuation levels (0 dB, -6 dB and -12 dB) increase maximum SPL to as high as 155 dB-A.

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. LEWITT’s unique zero self-noise architecture allows to capture extremely weak signals with great precision and detail.

Perfect Match technology
Any LCT 550 will always form a matched pair. Every single LCT 550 undergoes a series of measurements followed by an adjustment of the polarization voltage to achieve exactly the same sensitivity at 1 kHz in every microphone.

Illuminated user interface
The illumination of the user interface makes possible quick and accurate setup of the microphone.

Designed and engineered in Vienna, Austria
Like all LEWITT microphones, the LCT 550 is designed and engineered in Vienna, Austria.

The LCT 550 also offers a clipping history as well as an auto-attenuation mode that automatically switches to the next level of attenuation if the signal is too strong. For the elimination of structure-borne noise, there are two high-pass filters: 80Hz, 12dB/octave and 160Hz, 6dB/octave. Manufacturing tolerances have been minimized thanks to highly precise calibration of the capsule and the electronics. Perfect Match technology involves precise calibration of the capsule and electronics so that any two microphones will form a matched pair ideal for stereo and surround applications– which means that any two microphones from this series, set identically, will always form a matched pair at +/- 0 dB!

  • "The World's Quietest Microphone" the first with SN of 0 dB-A
  • Highly precise calibration of the capsule and the electronics
  • Any pair will always form a matched pair at +/- 0 dB
  • 1-inch dual system externally biased capsule
  • Active front and ultra-thin, gold-layered low mass diaphragm
  • Superior transient response
  • Cardioid polar pattern isolates the main sound source
  • Noiseless push buttons for attenuation and HPF selection
  • Max SPL of 143 dB for a total dynamic range of 140 dB
  • 3-position switchable pre-attenuation pad (0 , 6 and 12 dB)
  • 3-position high-pass filter
  • Illuminated user interface for quick & easy handling anywhere
  • Noiseless pushbuttons for simple attenuation & HPF selection
  • Clipping history, automatic attenuation and key-lock
  • Error-free recording and unparalleled ease of use
  • Gold-plated 3-pin XLR output connector
  • Transformerless preamp circuit immune to  interference
  • Extra-large hexagonal ruthenium-galvanized steel-mesh grille

Get your Lewitt LCT 550 Large Diaphragm Studio Condenser Microphone today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • LCT 550 Large Diaphragm Studio Condenser Microphone
  • LCT 40 SHx Microphone Shock Mount
  • LCT 40 Wx Foam Windscreen
  • DTP 40 Lb Vinyl Sleeve
  • Aluminum Case


by PowerReviews
Polar Pattern Cardioid
Frequency Response 20Hz-20kHz
Output Impedence 150 ohms
Dynamic Range (SPL) 143dB
Connector Type XLR
Self Noise 9.5dB
Pad Yes
Matched Pair No
Weight 14.9 Oz.
Dimensions 2.05 x 6.22 x 1.42 inches (WxHxD)
Series LCT
Model 550
Warranty Info:

2 year limited warranty

All products manufactured by LEWITT GmbH feature a limited two-year warranty. This two-year warranty is specific to the date of purchase as shown on your purchase receipt.

LEWITT GmbH shall satisfy the warranty obligations by remedying any material or manufacturing faults free of charge at LEWITT's discretion either by repair or by exchanging individual parts or the entire appliance. Any defective parts removed from a product during the course of a warranty claim shall become the property of LEWITT GmbH.

While under warranty period, defective products may be returned to the authorized LEWITT dealer together with original proof of purchase. To avoid any damages in transit, please use the original packaging if available. Please do not send your product to LEWITT GmbH directly as it will not be serviced. Freight charges have to be covered by the owner of the product.

The following cases are not covered by the above warranty:

  • minor deviations or faults in the quality of a product which do not affect the product's value or fitness for its intended purpose
  • any accessories supplied with the product
  • rechargeable and disposable batteries (these products have a shorter service life, the length of which also depends on the frequency of use)
  • faults resulting from improper use (e.g. operating errors, mechanical damage, incorrect operating voltage)

Proper use for the purposes of this warranty is defined as use of the product under the conditions stated in the instructions for use.
  • faults due to wear and tear
  • any modification of LEWITT products effected by you or a third party, unless LEWITT has given its prior written consent to the nature and extent of the modification

© 2012 LEWITT GmbH all rights reserved