Having trouble with hot signals? The Shure A15AS Attenuator is a handy solution. It has been designed to reduce the level of any balanced microphone or line-level signal. The three position slide switch lets you choose between a 15 20 or 25dB reduction to prevent overloading the input on your mixer audio interface or recorder. The A15AS features a female XLR connector on the input and a male XLR connector on the output side. Designed to let phantom power pass through which makes it fully compatible with condenser microphones.