LEWITT LCT 540 S is a large-diaphragm FET studio condenser microphone with a 1" true condenser capsule and 4 dB(A) self-noise – below the human hearing threshold across the full frequency spectrum. Fixed cardioid pattern, designed primarily as a vocal microphone, with onboard PAD and low-cut filters and LEWITT's Perfect Match Technology enabling matched stereo pairs with any other LCT 540 S unit.
4 dB(A) Self-Noise – What It Means in the Signal Chain
A well-regarded studio condenser typically lands between 7 and 12 dB(A) of self-noise. The LCT 540 S achieves 4 dB(A) – a figure matched by only a handful of microphones on the market at any price point. The practical consequence is straightforward: heavy compression, long signal chains, layered vocal stacks, heavily processed instruments – all of these amplify whatever noise the microphone introduces. At 4 dB(A), that noise stops being a variable. The high sensitivity of 41 mV/Pa means the preamp gain needed to reach a workable recording level stays lower, which further contributes to a cleaner final signal. The 132 dB(A) dynamic range covers the full spectrum from the quietest whisper to loud amplified sources – without reaching for a different microphone.
Perfect Match Technology and Stereo Pairing
Every LCT 540 S unit manufactured undergoes individual measurement and automated polarization voltage calibration to achieve identical sensitivity at 1 kHz. In practice this means a second LCT 540 S purchased months or years later will form a matched stereo pair with the first one – no unit selection, no sensitivity offset to compensate for. The LED embedded in the LEWITT logo doubles as a clipping indicator. The complete set includes a shockmount, magnetic pop filter, foam windscreen, leatherette bag, and a mil-spec hard transport case.
KEY FEATURES
- Self-noise: 4 dB(A) – below the threshold of human hearing across the full frequency range
- 1" true condenser capsule, 3 µm gold-sputtered Mylar diaphragm, 25.4 mm
- Polar pattern: cardioid
- High sensitivity: 41 mV/Pa (–28 dBV/Pa)
- Dynamic range: 132 dB(A) – from whisper-quiet sources to loud transients without changing mics
- Perfect Match Technology – guaranteed identical sensitivity across all units, stereo pairing with any LCT 540 S
- PAD: 0 dB / –6 dB / –12 dB
- Low-cut filter: linear / 80 Hz / 160 Hz (6 dB/oct)
- LED clipping indicator built into the logo
- Zinc die-cast housing, gold-plated XLR connector
- Includes: shockmount, magnetic pop filter, windscreen, leatherette bag, mil-spec transport case
TECHNICAL SPECIFICATIONS
- Transducer type: condenser, externally polarized
- Operating principle: pressure gradient transducer
- Diaphragm: 3 µm gold-sputtered Mylar, 25.4 mm (1")
- Polar pattern: cardioid
- Frequency range: 20 Hz – 20,000 Hz
- Sensitivity: 41 mV/Pa (–28 dBV/Pa)
- Self-noise: 4 dB(A)
- Maximum SPL (0.5% THD): 136 dBSPL (0 dB attenuation)
- Signal-to-noise ratio: 90 dB(A)
- Dynamic range: 132 dB(A)
- Attenuation pad: 0 dB / –6 dB / –12 dB
- Low-cut filter: linear / 80 Hz / 160 Hz (6 dB/oct)
- Internal impedance: 68 Ω
- Power supply: 48V phantom ±4V
- Current consumption: 3.6 mA
- Enclosure: zinc die cast
- Connector: gold-plated 3-pin XLR
- Dimensions: 158 × 52 × 36 mm (6.22" × 2.04" × 1.42")
- Weight: 371 g (13.1 oz)