PAC SNI-1 Noise Isolator<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Eliminates ground loop noise from radio pre-amp outputs</li><li>Eliminates DC Current from your RCA cables</li><li>Reduces most noise in your RCA signal path</li><li>Close to perfect response of +/- .03 dB from 20 Hz - 20kHz</li><li>Proprietary audio transformers for a 1.3 dB gain</li></ul></div><img src="http://ecx.images-amazon.com/images/I/416sPQJtB2L.jpg" noproxy>