Shure A15AS Switchable In-Line Microphone Attenuator Audio360 Its fully chambered

Its fully chambered

This construction is designed to support a more focused response while helping reduce unwanted feedback compared with an unbraced hollow design

the manufacturer specifies 16-gauge wire minimum and prefers 14-gauge wire

H9 UHF Band: Operates from 512–542 MHz

Shure A15AS Switchable In-Line Microphone Attenuator Audio360 Its fully chamberedThe Shure A15AS is a balanced in line attenuator designed to lower an audio signal before it reaches a microphone or line level input. It provides selectable 15 dB, 20 dB, or 25 dB attenuation to help prevent input overload when a source signal is too strong. This compact XLR barrel accessory is intended for professional audio signal management rather than amplification. It is useful for engineers, performers, content creators, and installers working