Bock Audio 251 Studio Tube Switchable Microphone

£4,500.00

Bock Audio 251 Large-diaphragm Tube Condenser Microphone at a Glance:
  • Versatile applications
  • Handcrafted excellence
  • Bock Audio modern vintage

Versatile applications
Though it's primary use will undoubtedly be on male or female vocals, the 251 is an extraordinary performer on other instruments as well. Drum kits will have astounding impact and transient response, with no overt artificial high end or midrange boxiness. Pianos will also benefit from the open top of this mic. It will also excel on acoustic guitars, percussion, and as a main ensemble mic. The 251 manages to capture the vibe of the legendary Telefunken ELAM 251, staying true to that mic's performance specs and unregulated power supply.

Handcrafted excellence
Bock Audio microphones are handcrafted, with point-to-point wiring, time-proven transformer circuitry, and an attention to detail that truly brings the sound of prized vintage mics "back to life." Bock Audio doesn't compromise when it comes to components, construction, assembly, or testing. These mics are hand-tuned, using strictly tested European capsules and premium-grade electronics.

A note about Bock Audio:
Bock Audio (formerly Soundelux) is a unique US manufacturer of true "professional level" microphones. Their mission is to restore the availability of the most important vintage microphones of all time without the vintage price and without the high maintenance. Bock Audio works to re-create as closely as possible the sonic signatures of the most important vintage microphones, using modern materials and assembly, hand workmanship and a very critical ear. The beauty of Bock Audio is that every microphone in the line is designed to work together as a team. The Soundelux line up provides the most important "colors" proven over time to be essential in all quality studio work.

Bock Audio 251 Features:
  • No-compromise construction; hand built, hand tuned, strictly tested European capsules
  • Time-proven tube and transformer circuitry
  • All electronic components are point to point wired
  • Each individual component in every microphone has been pre-screened for sonic quality
  • Power supply is true to the original, unregulated supply
  • Excellent bass with an open, airy top end
  • High frequency response that is not only present, but natural, quality tone
  • Allows vocals to sound naturally dominant without being overbearing
  • No midrange overemphasis and buildup when stacking vocal tracks
  • No honkyness or grunge
  • Smooth, clear sound, even when recorded digitally
  • Sounds great in all mixing studios and on all systems, before and after mastering


The Bock Audio 251 breathes new life into a classic mic sound!
Specification Detail
Microphone Type Tube Condenser
Polar Pattern Cardioid, Omni, Figure-8
Diaphragm Size 1" (25.4mm)
Frequency Response 10Hz-20kHz
Max SPL 129dB SPL (2% THD)
Output Impedance 200 ohms
Signal to Noise Ratio 76dB (A weighted)
Self Noise 18dB (A weighted)
Low Cut Filter No Filter
Pads No Pad
Color Grey
Connector XR
Weight 1.58 lbs.
Included Accessories Power Supply, Cable, Shock mount, Wood box
Manufacturer Part Number 251
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