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Universal Audio Bock 251 Large-Diaphragm Tube Switchable Multi-Pattern Condenser Studio Microphone

SKU: UAMICUA251 MFR: MIC-UA251
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Key Features

  • Capture pristine audio with this large-diaphragm tube condenser microphone, perfect for vocals.
  • Achieve versatile recordings using the Bock 251's switchable multi-pattern condenser, excelling in any studio.
  • Enjoy low noise and exceptional sound quality, thanks to the premium tube design of this microphone.
  • Rely on the durability of this studio microphone, built to withstand daily use while maintaining performance.
  • Easily connect via 3-Pin XLR for a seamless setup, making this condenser microphone user-friendly.
  • Get professional studio sound at a competitive price, offering exceptional value for your investment.
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Special Order?Estimated to Ship: 08/18/2025
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Universal Audio Bock 251 Specifications

  • Microphone Type

    Tube Condenser

  • Polar Pattern

    Multi-pattern

  • Frequency Range

    10 Hz - 18 kHz, +/- 2dB

  • Sensitivity

    -34 dB (19 mV) ref 1V at 1 Pa, 1 kHz

  • Max SPL

    118 dB SPL, 1% THD

  • Output Impedance

    150 Ohms

  • Recommended Load Impedance

    Greater than 1.2K Ohms

  • Adjustable Controls

    Polar pattern selector for Cardioid, Omni, Figure-8

  • Connector

    Tuchel (mic), 3-Pin XLR (power supply)

  • Dimensions (L x Dia.)

    8.5 x 2" (216 x 52mm)

  • Weight

    1.58 lbs (716g)

  • UPC Code

    819937003172

About Universal Audio Bock 251

For professionals seeking a high-quality, durable, and versatile audio recording solution, the Bock 251 Large-Diaphragm Tube Switchable Multi-Pattern Condenser Studio Microphone is an exceptional choice. This professional-grade microphone is meticulously handcrafted in Santa Cruz, California, adhering to the precise specifications of the globally acclaimed microphone designer, David Bock.

The Bock 251 is a tribute to the iconic ELAM 251, widely recognized as one of the finest vocal microphones ever created. It delivers a smooth, open tone that is reminiscent of its classic predecessor, while offering updated sonics for modern recording needs.

This reliable studio microphone features a German-made CK12 capsule and an oversized transformer, providing an extended low-frequency response that reaches down to 10 Hz. This ensures a richer, fuller sound, with higher SPL capabilities compared to vintage 251 microphones.

The Bock 251 also boasts a switchable polar pattern, allowing users to effortlessly transition between cardioid and omnidirectional modes. This versatility makes it an ideal choice for a variety of recording situations.

Equipped with a high-quality tube preamplifier, the Bock 251 adds warmth and character to your recorded sound, enhancing the overall audio quality. Each microphone is hand-wired using premium components, ensuring durability and longevity.

The Bock 251 comes complete with a vintage-inspired case, a robust shock mount, and other essential accessories, all designed to withstand the rigors of professional use. Experience the harmonious blend of traditional craftsmanship and modern technology with the Bock 251 Large-Diaphragm Tube Switchable Multi-Pattern Condenser Studio Microphone.

Universal Audio Bock 251 Features

  • Large-diaphragm tube studio condenser mic, lovingly handmade at the UA Custom Shop in Santa Cruz, California
  • Iconic, "golden unit" mic sounds with modern enhancements by David Bock
  • Switchable omnidirectional, cardioid, and Figure-8 polar patterns
  • German-made CK12 capsule and Cinemag transformer
  • Frequency Response: 10 Hz - 18 kHz, +/- 2 dB
  • Max SPL: 118 dB SPL, 1% THD
  • NOS ECC85 tube
  • Requires included UA Bock 251 PSU true linear power supply
  • Premium vintage-style suitcase

Key Features

  • Capture pristine audio with this large-diaphragm tube condenser microphone, perfect for vocals.
  • Achieve versatile recordings using the Bock 251's switchable multi-pattern condenser, excelling in any studio.
  • Enjoy low noise and exceptional sound quality, thanks to the premium tube design of this microphone.
  • Rely on the durability of this studio microphone, built to withstand daily use while maintaining performance.
  • Easily connect via 3-Pin XLR for a seamless setup, making this condenser microphone user-friendly.
  • Get professional studio sound at a competitive price, offering exceptional value for your investment.

What's in the box:

  • Universal Audio Bock 251 Large-Diaphragm Tube Multi-Pattern Condenser Studio Microphone
  • Power Supply
  • Premium Vintage-Style Suitcase
  • Universal Audio 1 Year Limited Warranty