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Modern 251 character in a compact form - at the core of the Heiserman Audio Type-21 is the same Generation 5 HK12 capsule found in the acclaimed Heiserman H251, hand-crafted by master technicians in the USA for consistency, nuance, and musicality. Packed into an all-aluminum body, the Type-21 employs a unique transformerless circuit built around a low-noise JFET, precision resistors, and carefully selected tantalum and film capacitors to deliver a rich, dimensional sound with exceptional clarity. This compact footprint makes it ideal for drum rooms, guitar cabs, vocal booths, and any confined space where a classic 251-inspired tone is needed without the bulk.
BUILT TO INSPIRE AND WITHSTAND DAILY USE
The Type-21 is engineered to handle whatever a modern session can throw at it, pairing studio-grade sonics with road-ready durability. A softly glowing Heiserman logo isn't just for aesthetics - it is a functional part of the circuit and a visual cue that the mic is ready to work. Switchable polar patterns (cardioid, omni, and figure-8), a high-pass filter, and a -15 dB pad give engineers precise control at the source, whether taming low-end buildup or managing high-SPL instruments.
Specifications
| Diameter | |
|---|---|
| Length | |
| Capsule Type | |
| Filters | |
| Frequency Range | |
| Impedance | |
| Input Pad | |
| Number of Microphones | |
| Polar Pattern | Bi-Directional, Cardioid, Omni-Directional |
| Sensitivity | |
| Maximum SPL | |
| Transducer Type | Condenser |
| Tube or Solid State |
