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Average Price: $5,739
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$100
$401+
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Based on price data from 7 merchants for "Universal Audio Bock 251 Large Diaphragm Multipattern Tube Condenser Microphone". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Crafted with the discerning audiophile in mind, the Universal Audio Bock 251 Large Diaphragm Multipattern Tube Condenser Microphone is a testament to the art of sound capture. Designed by the esteemed David Bock, this microphone is a modern nod to the legendary ELAM 251, revered as one of the greatest vocal mics ever created. Each unit is meticulously handcrafted in Santa Cruz, California, ensuring that every detail meets Bock's uncompromising standards for sonic excellence.
At the heart of the Bock 251 is a German-made CK12 capsule, renowned for its ability to capture the full spectrum of sound with stunning clarity. The microphone's switchable polar patterns—cardioid, omnidirectional, and figure-8—offer unparalleled versatility, making it an ideal choice for everything from intimate vocal performances to grand orchestral recordings. With a robust output transformer, the Bock 251 delivers an extended low-frequency response, enhancing its ability to handle high SPL levels with ease.
Complete with a dedicated external power supply, a sturdy shockmount, and a stylish vintage-inspired suitcase, the Bock 251 is not just a microphone but an heirloom piece of studio gear. Its handwired construction using premium components ensures not only exceptional performance but also a lifetime of reliable use. The Bock 251 isn't merely a tool; it's a gateway to capturing your sound in its purest form.
Key Features:
- German-made CK12 capsule for clear sound capture
- Switchable cardioid, omnidirectional, and figure-8 polar patterns
- Extended low-frequency response with high SPL capabilities
- Handwired using premium components for durability
- Includes external power supply, shockmount, and vintage-style suitcase
- Handcrafted in Santa Cruz, California
Product specs
| Microphone Type | Tube Condenser |
| Mono/Stereo | Mono |
| Polar Pattern | Cardioid, Figure-8, Omnidirectional |
| Diaphragm Size | 1" (25.4mm) |
| Frequency Response | 10Hz-18kHz |
| Max SPL | 118 dB 1% THD |
| Output Impedance | 150 ohms |
| Signal to Noise Ratio | 76dB (A weighted) |
| Sensitivity | -34 dB (19 mV) ref 1V at 1 Pa, 1 kHz |
| Self Noise | 18dB (A weighted) |
| Tube | New Old Stock ECC85 |
| Features | Polar pattern selector |
| Power Source | External power supply (included) |
| Connector | XLR |
| Dimensions | 2" x 8.5" |
| Weight | 12 lbs. |
| Included Accessories | Shockmount, power supply, 20' cable with Tuchel connectors, signature wooden box, suitcase |
FAQs
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What are the polar pattern options of the Universal Audio Bock 251 microphone?
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The Universal Audio Bock 251 offers switchable polar patterns including cardioid, figure-8, and omnidirectional, allowing for versatile recording applications.
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What type of tube does the Universal Audio Bock 251 use?
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The Bock 251 utilizes a New Old Stock ECC85 tube, contributing to its vintage-inspired sound character.
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Is the Universal Audio Bock 251 suitable for vocal recording?
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Yes, the Bock 251 is ideal for vocal recording, providing a classic "golden unit" sound with its large-diaphragm tube condenser design.
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Does the Universal Audio Bock 251 require an external power supply?
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Yes, the Bock 251 requires an external power supply, which is included with the microphone.
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What is the frequency response range of the Universal Audio Bock 251?
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The frequency response of the Bock 251 ranges from 10Hz to 18kHz, capturing a wide spectrum of sound.
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How does the Universal Audio Bock 251 handle high sound pressure levels?
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The Bock 251 can handle a maximum SPL of 118 dB at 1% THD, making it suitable for loud sound sources.
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What accessories are included with the Universal Audio Bock 251 microphone?
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The Bock 251 comes with a shockmount, power supply, 20' cable with Tuchel connectors, a signature wooden box, and a suitcase for storage and transport.
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