United Studio Technologies UT Tube67

United Studio Technologies UT Tube67 is an uncompromising large-diaphragm tube condenser microphone faithfully recreating the sound of classic 1960s German studio microphones. At the heart of the UT Tube67 is a hand-crafted UT K67 capsule (34mm brass, dual backplate) featuring a 6-micron diaphragm sputtered with 24-karat gold, optimized for the microphone's operating voltage. Paired with a NOS EF86 pentode tube and Lundahl LL1538 transformers, the microphone delivers silky smooth musical character with rich harmonic saturation and velvety high-end response, perfect for vocals, strings, piano, and acoustic guitars.

The UT Tube67 features three switchable polar patterns (cardioid, omnidirectional, figure-8), -10 dB pad, 80 Hz high-pass filter, and unique Air Mod switch – a high-frequency enhancement inspired by classic 1960s recording techniques. The dedicated external linear power supply ensures stable voltage and minimal self-noise (<11 dB(A)). The microphone ships in an elegant wooden box complete with professional suspension shockmount and 7-pin cable, providing a complete professional studio solution.

KEY FEATURES

• Large-diaphragm tube condenser with UT K67 capsule (34mm)
• 3 polar patterns: Cardioid, Omni, Figure-8
• NOS EF86 tube + Lundahl LL1538 transformers
• -10 dB pad and 80 Hz HPF (-12 dB)
• Unique Air Mod high-frequency enhancement
• Max SPL 137 dB @ 0.5% THD
• 38 Ω output impedance, self-noise <11 dB(A)
• Package: shockmount, PSU, wooden case, 7-pin cable

TECHNICAL SPECIFICATIONS

• Type: Large-diaphragm tube condenser
• Capsule: 34mm brass K67, 6μm 24k gold Mylar diaphragm
• Frequency Response: 20 Hz - 20 kHz
• Max SPL: 137 dB @ 0.5% THD (147 dB w/pad)
• Capsule Sensitivity: -38 dB @ 60V polarization
• Tube: NOS EF86 pentode
• Transformer: Custom UT-BV12 (USA-made)
• Power: Dedicated linear PSU
• Dimensions: Height 241 mm, Diameter 60 mm