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SKU

186487

Heiserman Audio H251 Large Diaphragm Tube Condenser Microphone

Highly detailed recreation of the 251 large diaphragm tube condenser microphone with 6072 TAD Highgrade tube, Generation 4 Hk12 brass and acrylic chambered capsule, and omni, cardioid and figure-8 polar patterns

MFR# H251

Product Description

The Heiserman H251 is a handcrafted, historically accurate recreation of the legendary AKG C12 microphone. This microphone was engineered with incredible care and attention to detail, making it a top choice for audio professionals looking for the ultimate in high-quality audio capture.

At the heart of the Heiserman H251 is the Generation-4 Heiserman Hk12 capsule, made with brass and acrylic chambered backplates and rich 6µm gold sputtered DuPont Mylar, which provides unmatched clarity and fidelity. The capsule is paired with a 6072 vacuum tube and the T14/1 transformer, which is an exact replica of a pristine vintage unit from 1961. The acrylic circuit board and full acrylic head assembly, complete with the original rotational pattern switch and full Ck12 saddle with felts and foam cushioning, make the H251 a true-to-original recreation.

Equipped with Vishay and Takman Rex resistors, NOS polystyrene and PIO capacitors, and a true-to-original design wet Tantalum output capacitor, the Heiserman H251 reproduces audio with extreme accuracy. The microphone features switchable polar patterns, including cardioid, omni, and figure-8, providing the user with greater versatility for different recording situations.

With a maximum SPL of 130 dB and a frequency range of 20 Hz - 20 kHz, the Heiserman H251 can handle even the most demanding recording situations. The H251 comes with a custom bulletproof power supply with world switching, a 7.5-meter Sommer tube mic cable with custom 251 style connector, and a rugged flight case, making it a perfect choice for on-the-go recording sessions. 

FEATURES:

  • Highly detailed recreation of the 251 large diaphragm tube condenser microphone
  • Generation 4 Hk12 capsule with the same brass and acrylic chambered backplates and rich 6µm gold sputtered DuPont Mylar
  • T14/1 transformer engineered from a pristine vintage unit from 1961
  • Vishay and Takman Rex resistors, NOS polystyrene and PIO capacitors
  • Custom bulletproof power supply with world switching, a 7.5 meter Sommer tube mic cable with custom 251 style connector and a rugged flight case included

Product Specifications

Condition New
Package Contents H251 condenser microphone, power supply unit, 7.5 m Sommer tube mic cable, and rugged flight case
Length 8.5 in
Diameter 2 in
Tube or Solid State Tube
Tube Type 6072 TAD Highgrade
Capsule Type Generation 4 Hk12 brass and acrylic chambered
Transducer Type Condenser
Polar Pattern Bi-Directional / Figure-Eight, Cardioid, Omni-Directional
Number of Microphones Single Microphone
Impedance 50 or 200 Ohms (switchable via jumper links)
Frequency Range 20 Hz - 20 kHz
Sensitivity 17 mV/Pa ±1 dB
Max. SPL 130 dB
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!
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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.
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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.
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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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