The Whirlwind IMP Pad 20dB sports the perfect amount of signal attenuation to effectively in a line signal into a microphone pre or match levels between two pieces of gear. Attenuation is a critical part of recording and signal matching, ensuring that an overly "hot" signal won"t hit the in of the device it"s going into too hard. In short, attenuators are effective at avoiding unwanted distortion. An audio toolkit essential, the IMP Pad 20dB is also available in 10, 30, and 40dB attenuation versions. Take control of your signal with the Whirlwind IMP Pad 20dB.