Features: 1. RCA Ground Ring Isolator/Noise Filter Rca Unreduced Bass Can Help You Reduce Noise From Car And Home Audio Electrical Systems, Providing You With Hifi Sound Quality Output. Perfect Solution To Car And Home Stereo Noise Problems. 2. Made Of High-Quality ABS Fireproof Shell, Sturdy, Durable And Durable. 3. Plug And Play Design, The Audio Isolation Transformer Alternator Is Easy To Install Without Any Complicated Tools And Can Be Used After The Rca And Cables Are Connected Correctly. White And Red. 4. Hifi Performance, The Ground Loop Audio Noise Reducer Can Be Used With Car Audio, Amplifiers, Speakers Or Mixers, With Stable Performance, High Precision And Reliability. Allows You To Eliminate Car Speaker/Home Stereo System And Enjoy Perfect Sound. 5. Wide Range Of Applications, Audio Noise Isolator Filter, Eliminates Ground Loop Noise Between The Audio Source And The Radio. For Portable Devices With Rca Audio Outputs Home Stereo Speakers Amplifiers Equalizers And More. Description: 1. Material: ABS 2. Product Size: Shell Size: About 65 x 38mm; RCA Gold-Plated Wire Length: About 100mm 3. Type: Adapter Cable 4. Wire Core Type: Copper Core 5. Interface: Audio Output color: Black Package Contents: 1 x Audio Isolator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.