Shure KSM44A/SL

Dual 1-inch, externally biased, ultra-thin, 2.5 micron, 24-karat gold-layered, low mass, Mylar? diaphragms provide superior transient response
Multiple polar patterns: cardioid, omnidirectional and bidirectional?for maximum flexibility in a wide variety of applications
Prethos? Advanced Preamplifer Technology: provides transparency, extremely fast transient response and no crossover distortion, minimizes harmonic and intermodulation distortions
Groundbreaking self-noise specifications: 4 dB (cardioid), 6 dB (omnidirectional), 7.5 dB (bidirectional)
Full-range frequency response (20 Hz – 20 KHz) for an extremely accurate reproduction of voice and instruments
Highly consistent polar patterns
Premium electronic components and gold-plated internal and external connectors
Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
15 dB attenuation switch for handling high input SPL sound sources
3-position switchable low-frequency filter virtually eliminates unwanted background noise and controls proximity effect
Durable zinc die-cast housing and hardened low carbon steel grille to protect the cartridge from accidental drops or misuse
An integrated three-stage pop protection grille to guard against wind and breath noise
An internal shock mount to reduce unwanted handling and stand noise