The Shure KSM27 is a side-address condenser microphone with a cardioid polar pattern. Designed for studio use, but rugged enough for live applications, the KSM27 has an externally biased, 1 in. diaphragm, extremely low self-noise, and an extended frequency response specially tailored for vocal tracking and instrument recording.
Features
Cardioid polar pattern - the most commonly used pattern for both studio and live applications
1 in., externally biased, ultra-thin, 24 Karat gold-layered, low mass, Mylar(TM) diaphragm provides superior transient response
Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response and no crossover distortion, while minimizing harmonic and intermodulation distortions
Premium electronic components and gold-plated internal and external connectors
Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect
Integrated 3-stage "pop" protection grille reduces plosives and other breath noise
Internal shock mount reduces handling and stand noise
Extended frequency response
Low self noise
Exceptional low-frequency reproduction
High output level
High input SPL capability
No crossover distortion
Extremely uniform polar response
Superior common mode rejection and suppression of radio frequency interference
ShureLock Rubber Isolated Shock Mount
Protective Velveteen Pouch
Applications
Voice - solo, background, voice-over, broadcasting
Acoustic instruments - such as piano, guitar, drums, percussion, strings
Electric instruments such as guitar and bass
Wind instruments - brass and woodwind
Low frequency instruments - such as double bass, electric bass, kick drum
Overhead miking - drums or percussion
Ensembles - choral or orchestral
Room ambiance pickup - guitar amplifier or drums
Microphone use, however, is a matter of personal taste. The KSM27 may be used for a variety of applications other than those listed. Both the acoustic environment and microphone placement strongly affect the sound obtained from miking a source, especially with a high-resolution microphone like the KSM27. You may need to experiment with microphone placement and room treatments to achieve the best overall sound for each application.
Technical Info
Cartridge Type: Externally Biased Condenser
Frequency Response: 20-20,000 Hz
Output Impedance: 150 ohms (actual)
Attenuation Switch: 0 or 15dB attenuation
Low Frequency Response: Switch flat; -6 db/octave below 115 Hz; -18 dB/octave below 80 Hz
Phantom Power: 48 Vdc
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
