United UT FET47

United Studio Technologies UT FET47 – Cardioid FET studio condenser microphone

The UT FET47 by United Studio Technologies is a meticulous and passionate recreation of one of the most iconic solid-state condenser microphones in recording history. Developed through several years of research and development, it captures with remarkable accuracy the density, realism, and sonic depth that made this microphone a staple on countless legendary recordings — now available at an accessible price point, with no compromise on quality.

At the heart of the UT FET47 are premium components: a HZ-Series capsule designed by Eric Heiserman, inspired by the classic German K47 design, paired with a custom Cinemag USA transformer. This combination delivers an open, three-dimensional, and articulate sound, with fast transient response and excellent handling of high-SPL sources.

The HZ-Series capsule features perfectly matched dual backplates, ensuring exceptional consistency from one microphone to another. Its internal damping system effectively reduces mechanical vibrations, eliminating the need for a dedicated external shock mount. Each microphone is assembled and tested in the USA by experienced audio engineers, using modern components alongside carefully selected vintage-spec parts.

Designed for modern studios as well as analog sound purists, the UT FET47 excels on vocals, kick drums, bass, brass, and any source requiring power, precision, and character. This is not just a microphone — it is a sonic statement by United.

Features:

• Type: Solid-state FET condenser microphone
  
  
• Capsule: HZ-Series 34 mm all-brass, dual backplate K47-type
  
  
• Diaphragm: Dual 6-micron Mylar (PET), 24k gold-sputtered
  
  
• Polar pattern: Cardioid
  
  
• Frequency response: 20 Hz – 20 kHz
  
  
• Capsule sensitivity: -37 dB @ 60 V
  
  
• Max SPL: 136 dB (145 dB with pad) @ <0.5% THD
  
  
• Self-noise: <10 dB (no pad, no high-pass filter)
  
  
• Amplification: Field-effect transistor (FET)
  
  
• Transformer: Cinemag USA, transformer-balanced output
  
  
• Output impedance: 150 Ω
  
  
• High-pass filter: 75 Hz (-12 dB/octave slope)
  
  
• Pad: -10 dB
  
  
• Connector: 24k gold-plated XLR (pin 2 hot, pin 1 ground)
  
  
• Power supply: 48 V phantom power via XLR
  
  
• Body: Precision-machined solid brass, electroplated nickel finish
  
  
• Mounting: Integrated adjustable stand mount
  
  
• Included accessories: Vintage-style carrying pouch
  
  
• Dimensions: 200 × 70 × 63 mm
  
  

Key points:

• Authentic vintage sound: Inspired by a legendary FET microphone used on thousands of iconic recordings.
  
  
• Heiserman HZ-Series capsule: Open, detailed, and three-dimensional, with precisely matched backplates.
  
  
• Cinemag USA transformer: Solid low end, rich midrange, and natural highs with no compromise.
  
  
• Designed by audio engineers: Assembled and tested in the USA to true professional standards.
  
  
• Exceptional studio versatility: Vocals, kick drum, bass, brass, percussion, and high-SPL sources.