United Studio Technologies UT Twin48 – premium large-diaphragm tube condenser microphone with dual voicing modes (47 and 48), NOS EF86 tube, K48 capsule, US-made UT-BV8 transformer, and fully discrete power supply.
UT Twin48 is a reference-grade tube microphone that captures the sound of two legendary models from the 1940s and 1950s – in a single body. With the Twin Mode switch, users can toggle between 47 mode (cardioid and omni) and 48 mode (cardioid and figure-8), delivering two distinct tonal characters ideal for vocals, brass, strings, and a wide range of instruments.
The amplification stage is built around a hand-selected NOS EF86 pentode, producing a rich, harmonically saturated sound. The custom UT K48 capsule is a brass, dual-diaphragm, single-backplate design with 24k gold sputtering, optimized for a 60 V polarization voltage. The UT-BV8 transformer is hand-wound in the USA to Braunbuch specification, featuring high-nickel laminations and full Faraday shielding.
The included fully discrete power supply provides isolated voltage rails, designed without integrated circuits or switching transformers, ensuring exceptionally low self-noise. The package also includes a premium Sommer Octave 7-pin cable and a vintage-style carrying case.
KEY FEATURES
- Twin Mode: two distinct tonal characters (47 and 48)
- Selectable polar patterns: cardioid, omni, figure-8
- NOS EF86 pentode tube for rich, saturated sound
- Custom K48 capsule with gold-sputtered diaphragms
- Handcrafted UT-BV8 transformer (USA)
- Discrete power supply with ultra-low noise design
- 7-conductor Sommer Octave cable included
- Vintage-style case and shockmount
TECHNICAL SPECIFICATIONS
- Type: Tube condenser microphone
- Capsule: Brass 34 mm, single-backplate K48
- Diaphragm: Dual, 6 µm, Mylar with 24k gold sputtering
- Sensitivity: -37 dB at 60 V
- Frequency response: 20 Hz – 20 kHz
- Polar patterns: 47 Cardioid, 48 Cardioid, 47 Omni, 48 Figure-8
- Operating modes: 47 and 48
- Max SPL: 137 dB @ 0.5% THD
- Output impedance: 35 Ω
- Connector: Gold-plated 7-pin XLR
- Tubes: NOS EF86 pentode
- Self-noise: 11 dBA
- Transformer: UT-BV8, hand-wound in the USA
- Body: Nickel-plated brass
- Mounting: Shockmount suspension (included)
- Power supply: 110–120 V / 220–240 V (switchable)
- Cable: Sommer Octave 7-pin, 6 m
- Included accessories: power supply, shockmount, cable, case
- Microphone dimensions: 265 mm (H) × 62.5 mm (Ø)
- Power supply dimensions: 93 × 195 × 180 mm
- Case dimensions: 170 × 500 × 320 mm
