Heiserman Audio Type-21 Large Diaphragm Condenser Microphone

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.

HEISERMAN AUDIO TYPE-21 FEATURES:

• Hand-crafted Generation 5 HK12 capsule
• Stunning industrial design with softly glowing functional logo
• Switchable cardioid, omni, and figure-8 polar patterns
• High-pass filter and -15 dB pad for flexible source control
• Designed, machined, assembled, and fully made in the USA