AT8646QM/S Shock-Mount W/ XLRF Mute Switch

Mute Switch
The AT8647QM/S features a press-on/press-off switch that controls the
microphone, muting it by 50 dB at 1,000 Hz. The circuitry also operates a
light in the switch, powered by the 24–48V phantom source, to indicate
when the mic is “on.” Regardless of the switch position, the actual mic
operating voltage will be approximately 10-12V less than the phantom
source voltage.