XtremPro Hi-end Ground Loop Noise Isolator / Filter for Car Audio / Home High-fidelity System - Black (65042)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>THD:&lt; 0.001 %</li><li>Transmission Ratio: 1:1</li><li>Input/output impedance: 12 kΩ</li><li>Frequency Range: 20-30，000 Hz</li><li>Gold-plated RCA Jacks / 2 Inputs， 2 Outputs</li></ul></div><img src="http://ecx.images-amazon.com/images/I/413O20tvLEL.jpg" noproxy>