Shure A15AS Switchable Attenuator (15, 20, 25 dB), Passes Phantom Power

The A15AS is a switchable in line attenuator that reduces the level of any balanced microphone or line level signal. A switch selects 15, 20, or 25 dB of attenuation, and the unit passes phantom power through to the microphone. It connects between the microphone cable and the console input to keep hot sources from overloading a preamp stage.