Heiserman Audio H251 *Open Box* Full Warranty*

*This unit is an open box, used demo recording drum overheads for an hour, never sang into*

The Heiserman H251 is the latest addition to the lineup, meticulously engineered to recreate the historical essence of its predecessors. The centerpiece of this microphone is the extraordinary Generation-4 Heiserman Hk12 capsule, boasting brass and acrylic chambered backplates and a lavish 6µm gold sputtered DuPont Mylar diaphragm.

Key Features

• Generation-4 Hk12 Capsule: The H251 features the Generation-4 Heiserman Hk12 capsule, meticulously crafted with precision, utilizing brass and acrylic chambered backplates for exceptional sonic performance.
• Hand-Machined Hardware: All hardware, including the Hk12 capsule, is machined by hand in North Carolina by master machinists, ensuring a level of craftsmanship that pays homage to the historical lineage of the original 251 microphone.
• Historically Accurate Internal Components: The microphone's internal details faithfully replicate the original 251, featuring a new production T14/1 transformer, acrylic circuit board, and a full acrylic head assembly with the original rotational pattern switch and Ck12 saddle.
• Premium Circuit Components: The H251 incorporates high-quality components, including Vishay and Takman Rex resistors, NOS polystyrene and PIO capacitors, and a true-to-original design wet Tantalum output capacitor, ensuring sonic integrity.
• Automotive Grade Finish: The microphone is adorned with an automotive-grade painted finish in the original Siemens Grey color, combining historical aesthetics with modern durability.
• Comprehensive Package: Each Heiserman H251 microphone system includes a custom bulletproof power supply with worldwide compatibility, a 7.5-meter Sommer tube mic cable with a custom 251-style connector, and a robust flight case.
• Variety of Polar Patterns: The microphone offers versatile polar patterns, including Cardioid, Omni, and Figure-8, catering to a range of recording scenarios and preferences.
• Switchable Impedance: The impedance of the H251 is switchable via jumper links, providing flexibility for different recording applications.
• Tube and Transformer Excellence: Equipped with a 6072 TAD Highgrade vacuum tube and a T14/1 transformer, the H251 ensures premium tube and transformer performance.
• Wide Frequency Range: With a frequency range spanning from 20 Hz to 20 kHz, the H251 captures a broad spectrum of frequencies with exceptional clarity.
• Low Self-Noise: Boasting a self-noise of 10dBA, the microphone minimizes unwanted noise, ensuring clean and transparent audio capture.
• Impressive Sensitivity and SPL Handling: The H251 offers a sensitivity of 17mV/Pa ± 1dB and can handle maximum sound pressure levels (SPL) of up to 130 dB, making it suitable for a variety of recording situations.
• Warranty: Each Heiserman H251 comes with a 3-year limited warranty, providing peace of mind for users.