Shure KSM42/SG Large Dual-Diaphragm Side-Address Condenser Vocal Microphone Highly consistent cardioid polar pattern creates a broad sweet spot and natural off-axis response Prethos Advanced Preamplifier Technology exhibits extremely low self-noise with superior dynamic range, transient response and ultra-low distortion for transparent recording Dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1-inch Mylar diaphragm Passive back diaphragm delivers exceptional control of low frequency proximity effect Tailored low-frequency roll-off minimizes low frequency room noise Integrated three-stage mesh grille guards against wind and breath noise Open cage ShureLock rubber suspension shock mount with low-profile Popper Stopper magnetic pop filter produces a natural space between performer and microphone Extremely low self noise for critical studio vocal recording Premium electronic components and gold-plated internal and external connectors Durable zinc die-cast housing and hardened low carbon steel grille, and internal shock mount to reduce unwanted handling and stand noise KSM microphones are exquisitely engineered to capture the detailed sonic nuance of critical studio performances. Delivering a level of clarity, control, and durability that is simply unprecedented.