The Shure KSM137/SL is a stereo matched pair of end-address condenser microphones, designed for critical studio recording and live sound reinforcement. Featuring a highly consistent cardioid polar pattern, a wide frequency response, and an extremely low self-noise, the KSM137/SL excels at capturing acoustic instruments, drums, overheads, and ensembles with exceptional clarity and detail. Its robust construction and switchable 15 dB pad and three-position low-frequency filter make it versatile for various sound sources and environments.