This premium side-address, cardioid condenser microphone features a large dual-diaphragm capsule, optimized for world-class vocal recording and performance applications. With a tailored frequency response and extensive internal and external pop filtering, the single-pattern, dual-diaphragm design of the KSM42, featuring Prethos�Advanced Preamplifier Technology exhibits an exceptionally smooth proximity control and ultra-wide dynamic range. The KSM42 is the premier choice for capturing sophisticated, powerful and intimate vocal performances.

Prethos Advanced Preamplifier Technology employs transparent internal circuitry architectures that enable unprecedented audio quality and performance.

Cartridge Type
Dual-Diaphragm, Front-Active, Externally Biased Condenser

Frequency Response
60 to 20,000Hz

Polar Pattern
Cardioid

Output Impedance
147 ?

Sensitivity (at 1 kHz, open circuit voltage)
?37 dBV/Pa (14.1 mV)
1 Pascal=94 dB SPL

Maximum SPL (1 kHz at 1% THD)
1000 ? load: 139 dB
2500 ? load: 139 dB
THD of microphone preamplifier when applied input signal is equiva�lent to cartridge output at specified SPL

Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
86 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

Dynamic Range (at 1 kHz)
1000 ? load: 131 dB
2500 ? load: 131 dB

Common Mode Rejection (10 Hz to 100 kHz)
> 60 dB

Clipping Level (20Hz-20 kHz at 1% THD)
1000 ? load: 6.5 dBV
2500 ? load: 8 dBV

Self Noise (typical, equivalent SPL, A-weighted)
8.5 dB

Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

Weight
Net: 494 g
with shock mount and pop filter: 820 g

Connector
Three-pin professional audio (XLR), male

Power Requirements
11 to 52 Vdc phantom, 6 mA

• 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
• Passive back diaphragm delivers exceptional control of low frequency proximity effect
• Premium electronic components and gold-plated internal and external connectors
• Dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1-inch Mylar® diaphragm
• 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
• Durable zinc die-cast housing and hardened low carbon steel grille
• Internal shock mount to reduce unwanted handling and stand noise