A15HP High Pass Filter
The Shure A15HP filter rolls off low audio frequencies to reduce 60 Hz electrical hum, low-frequency wind noise, air conditioner noise, or stand- and floor-transmitted low-frequency vibrations.
Frequency Response Flat above rolloff point; -0.5 dB maximum at 1 kHz
Impedance Designed for 150 ohm rated microphones and inputs
Distortion 2.5% maximum (100 mV input, open circuit output)
Connectors Input: 3-socket XLR connector Output: 3-pin XLR connector
Case Full magnetic shield, steel with gray enamel finish
Dimensions 19 mm (3/4 in.) diameter; 114 mm (4 1/2 in.) long