PAC PAC SNI-1/3.5 Noise Filter

This noise filter is great for eliminating ground loop noise between an auxiliary source and radio. This noise filter has close to perfect frequency response of +/- .03 dB from 20-20kHz. Unlike other manufactures that use 1:1 transformers, PAC utilizes proprietary audio transformers for a 1.3 dB gain to compensate for any signal loss that may occur due to additional connections in the signal path.