SKU: 50219855241

Universal Audio Bock 251 Tube Condenser Microphone w/PS

Sale price$3869.55 Regular price$4299.50
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Universal Audio Bock 251 Tube Condenser Microphone w/PSSpecial Order Universal Audio Bock 251 Tube Condenser Microphone w PS Reach Sonic Nirvana The UA Bock 251 is our flagship large diaphragm tube condenser mic, giving you the smooth, open tone of the iconic ELAM 251,* considered by many to be the greatest vocal mic ever made. Each microphone is handmade in Santa Cruz, California, to the exacting specifications of worldrenowned mic designer David Bock. Add Handmade Magic to your Studio The UA Bock 251 is

Special Order

Universal Audio Bock 251 Tube Condenser Microphone w/PS

Reach Sonic Nirvana

The UA Bock 251 is our flagship large-diaphragm tube condenser mic, giving you the smooth, open tone of the iconic ELAM 251,* considered by many to be the greatest vocal mic ever made. Each microphone is handmade in Santa Cruz, California, to the exacting specifications of world‑renowned mic designer David Bock.

Add Handmade Magic to your Studio

The UA Bock 251 is David Bock's loving interpretation of the classic 251 microphones he studied and maintained as chief technical engineer of the world's top recording studios for two decades. Handbuilt at UA’s Custom Shop in Santa Cruz, California, the UA Bock 251 mic puts "golden unit" sound at the heart of your recordings.

Rich Tube Mic Sounds, with Updated Sonics

With its German-made CK12 capsule and large output transformer, the UA Bock 251 gives you extended low‑frequency response down to 10 Hz and higher SPL capabilities versus vintage 251 microphones.

Built for a Lifetime of Harmonious Recording

Handwired using premium components, each UA Bock 251 is built and tested to David Bock's exacting specifications. With its vintage-inspired case, robust shock mount and accessories, this mic spares no expense to last a lifetime.

 

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

 

Polar Pattern

Switchable Omnidirectional, Cardioid, and Figure-8

Capsule

1” diameter
Dual asymmetrical backplate
Dual diaphragm CK12 type

Tube

New Old Stock ECC85

Maximum SPL

118 dB SPL, 1% THD

Adjustable Controls

Polar pattern selector

Frequency Range

10 Hz - 18 kHz +/- 2 dB

Sensitivity

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

Output Impedance

150 Ohms

Recommended Load Impedance

> 1.2K Ohms

Dynamic Range

100 dB

Signal-to-Noise Ratio

76 dB

Power

UA Bock 251 PSU true linear, 115V (default) or 230V operation

Connectors

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50219855241

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Amazon Customer
Charlottesville, US
★★★★★ 1
Defected Item
I bought two pair of these slippers, one for each of my children. One of the slippers on the smaller pair is defected, but alas we are past the return period. I just hate that we spent a good amount of money for what should be a quality product and it is defected. I hate for her to continue to wear them and possibly injure her foot due to the way the shoe leans.
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Reviewed in the United States on November 13, 2022
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Amazon Customer
Waukegan, US
★★★★★ 5
Great buy
Warm and fun
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Reviewed in the United States on February 12, 2026
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Verified Purchase
Sam R
Massapequa, US
★★★★★ 5
Great quality
Size: 7-8 Toddler, Color: Moo-moo Cow
These are so cute and comfortable. My 3 yo can put them on himself and it is so cute that they light up. Fit as expected and are great quality. Even the dog hasn’t been able to tear them apart. Would buy more styles!
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Reviewed in the United States on January 27, 2025
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Verified Purchase
R. L. P.
Fort Morgan, US
★★★★★ 5
Great brand
Size: 7-8 Toddler, Color: Moo-moo Cow
I usually order from their web site but they were out of stock so I decided to check Amazon and there they were. They are cute. The baby keeps them on his feet. They look warm because they are well cushioned. The quality is good and it makes a great gift because they light up.
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Reviewed in the United States on January 2, 2025
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Verified Purchase
T-RA
Carnegie, US
★★★★★ 5
Grandson LOVES them!
Purchased for my grandson. He LOVES them and especially because they light up! Very comfy..
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Reviewed in the United States on February 6, 2025

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