Bock Audio

Bock 251

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  • Regular price R 126,375.99

Bock Audio 251

The 251 is THE vocal sound people ask for, but the original (vintage) versions are 50+ years old and sound very different from one another. Repairing, rebuilding and “nursing” original 251’s has been David Bock’s work spanning over 30 years. The risk for a modern studio or end user to depend on a vintage mic on a daily basis is increasingly problematic. The 251 is David Bock’s answer to the vintage mic dilemma of getting “that sound” without the headaches. It is a premier lead microphone for premier voices. It is built to last and provide the studio and user with many years of daily, high end performance.


  • Microphone Type: Tube Condenser
  • Polar Pattern: Cardioid, Omni, Figure-8
  • Diaphragm Size: 1" (25.4mm)
  • Frequency Response: 10Hz-20kHz
  • Max SPL:  129dB
  • Output Impedance:  200 ohms
  • Signal to Noise Ratio:  76dB (A weighted)
  • Self Noise:  18dB (A weighted)
  • Color:  Grey
  • Connector:  XLR
  • Weight:  1.58 lbs.
  • Included Accessories:  Power Supply, Cable, Shock Mount, Wood box 


What makes it different?

The 251 provides the user with absolute confidence that this is the mic you put in the most critical situations. Bock Audio's 251 uses a proprietary hand-made German capsule, a proprietary hand-wound multisectioned audio transformer, 

NOS tube in the mic amplifier, a hand-built outboard power supply and a custom low capacitance audio cable. This is one of the best overall mic packages available on the market at any price. The 251 is the ideal microphone to choose when there is a variety of applications that must met with absolute top recording quality. With frequency response that extends well beyond the normal range of typical studio microphones, the Bock Audio 251 sets new standards. 

FOR VOCALS, the 251 instantly delivers that huge vocal sound you have wanted for years. It sounds equally impressive on females and males. It will capture the most intimate and subtle details of a vocal yet maintain integrity at high SPL’s. It holds up track after track, “sitting on top” in extremely dense mixes without EQ.

FOR INSTRUMENTS, this mic offers very high end performance on critical stringed instruments, orchestras, choirs and small ensembles. The outstanding transient response reveals elusive harmonic details that spell the difference between good... and GREAT in your recordings.