LEWITT
LEWITT PURE TUBE - Studio set
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LEWITT PURE TUBE – Studio Set is a tube large-diaphragm condenser microphone built around a 1" true condenser capsule and a hand-selected 12AU7/ECC82 tube. The Studio Set includes the microphone, external PSU, 7-pin XLR cable, quick-release shockmount, dual-layer magnetic pop filter, and a mil-spec hard transport case. Winner of the Sound on Sound 2024 Best Microphone award.
Tube Character Without the Noise Floor Penalty
The recurring problem with vintage-style tube microphones is self-noise – typically 12 dB(A) or higher – which becomes audible when applying heavy compression or layering multiple vocal tracks. PURE TUBE addresses this by removing semiconductors and capacitors from the audio signal path entirely: the tube is the only active element in the chain. The result is a self-noise figure of 7 dB(A), a number most solid-state condensers don't reach and virtually no tube microphone on the market matches. That opens the PURE TUBE to scenarios where tube mics are normally ruled out: dense vocal stacking, heavily compressed productions, and sessions with quieter, more dynamic vocalists.
A built-in transformer-based filter compensates for proximity effect, smoothing low-frequency build-up at close distances without requiring corrective EQ in post. The frequency response is quasi-linear with subtle lift around 3.5 kHz and 10 kHz, reinforcing vocal presence and air without obvious coloration. The external PSU handles both 110 V and 230 V globally and requires a 30-second warm-up time after power-on.
What the Studio Set Adds
Compared to the Essential Set, the Studio Set includes the large quick-release shockmount – designed to integrate directly with the magnetic pop filter system, which clips onto the mount itself with no additional gooseneck arm. Everything ships in a mil-spec hard case built for regular transport. The zinc die-cast microphone body (692 g) features a visible tube glow through the front grille when powered. LEWITT backs the microphone with a 10-year warranty.
KEY FEATURES
- Hand-selected 12AU7/ECC82 tube – the sole active element in the audio signal path
- No semiconductors or capacitors in the signal chain – tube character only
- Self-noise: 7 dB(A) – exceptional for any tube microphone
- 1" true condenser capsule, 3 µm gold-sputtered Mylar diaphragm, 25.4 mm
- Polar pattern: cardioid
- Built-in transformer-based filter compensating for proximity effect
- Subtle presence lift around 3.5 kHz and 10 kHz for vocal recordings
- Magnetic pop filter integrating directly with the shockmount – no extra arm
- External PSU with global voltage range (110/230 V)
- Mil-spec hard transport case included
- 10-year manufacturer warranty
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: 28.2 mV/Pa (–31 dBV/Pa)
- Self-noise: 7 dB(A)
- Maximum SPL: 132 dBSPL
- Signal-to-noise ratio: 87 dB(A)
- Dynamic range: 125 dB(A)
- PSU supply voltage: 230 V / 50 Hz or 110 V / 60 Hz
- Connector: 7-pin XLR
- Enclosure: zinc die cast
- Microphone dimensions: 196 × 65 × 45 mm (7.7 × 2.6 × 1.8")
- Microphone weight: 692 g (24.41 oz)
