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SKU

181550

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Universal Audio Bock 251 Large Diaphragm Tube Condenser Microphone

Large diaphragm tube condenser microphone modeled after the venerable 251 featuring all-brass C12-type capsule, switchable cardioid, omnidirectional and figure-8 polar patterns, and custom transformer for extended frequency response

MFR# MIC-UA251
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Product Description

In 2020, Universal Audio enlisted David Bock of Bock Audio to design a new line of premium tube and FET condenser microphones based on his most cherished designs. Manufactured in Santa Cruz, California, the Universal Audio Bock 251 is a large-diaphragm, multi-pattern tube condenser microphone built with high-quality through-hole components and timeless UA design for the professional engineer and recording artist.

The 251 has become a Holy Grail microphone due to its incredible tone, and has been used on countless great recordings over the last 50+ years. It is also one of the most-replicated microphones in history, a testament to its enduring status as a piece of immortal gear. The UA Bock 251 builds on this legacy as an authentic replica made with premium components for ultimate reliability. The transformer has been re-engineered for a wider frequency response and greater headroom. Like the original, the Bock 251 also features switchable cardioid, omnidirectional, and bidirectional (figure-8) polar patterns for maximum versatility in the studio. It ships complete with a shock mount, power supply unit, 20’ cable with Tuchel connectors, a signature wooden box, and retro-style suitcase. Add the Bock 251 to your mic locker today and use it to capture astonishing vocal tracks or for detailed recordings of any instrument!

FEATURES:

  • Trust your sound to a premium studio mic, lovingly handmade at the UA Custom Shop in Santa Cruz, CA
  • Enjoy "golden-unit" consistency with every Bock 251 mic hand calibrated by David Bock
  • Get the sound of one of the most treasured mic designs in history, updated and overbuilt to a higher standard
  • Experience boutique UA quality including premium capsules and handwired components to last a lifetime
  • Proprietary all-brass C12-type capsule
  • Switchable cardioid, omnidirectional, and bidirectional polar patterns
  • Newly engineered transformer for increased frequency response and headroom
  • UA Bock 251 PS true linear inductor-based power supply for increased dynamic range and tube life

Product Specifications

Condition New
Package Contents 251 microphone, shock mount, power supply, 20' cable with Tuchel connectors, signature wooden box, and suitcase
Tube or Solid State Tube
Tube Type New Old Stock ECC85
Capsule Type 1” diameter
 dual asymmetrical backplate (dual diaphragm CK12 type)
Transducer Type Condenser
Polar Pattern Bi-Directional / Figure-Eight, Cardioid, Omni-Directional
Number of Microphones Single Microphone
Impedance 150 Ohms (output)
Frequency Range 10 Hz - 18 kHz
Sensitivity -34 dB (19 mV) ref 1V at 1 Pa, 1 kHz
Max. SPL 118 dB 1% THD
Analog or Digital Analog

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
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Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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