Description: This is a Ground Loop audio Isolator, Acoustic Noise Filter, Eliminate audio current sound, Transformer signal noise reducer._x000D_ Remove hum. Eliminate the hum noise caused by ground loops when the audio source and (some car speakers/home audio systems) use the same power supply, so as to achieve clear music enjoyment, and the best will bloom from there._x000D_ Pure sound quality. There is no damage of rock music, a better experience, and can be used on mono. Easy to use, just plug and play, no battery required. Small and portable, this gadget doesn't take up much space and is easy to take away._x000D_ Works with any portable device that has RCA audio jacks, for your Car Audio System/Home Stereo._x000D_ This product can only eliminate noise and current noise caused by common power and common ground products, but cannot eliminate noise caused by other reasons, so you need to confirm the source of the noise yourself._x000D_ _x000D_ Specification:_x000D_ Model: R2_x000D_ input channel 2_x000D_ output channel 2_x000D_ Input impedance 600_x000D_ Output impedance 600_x000D_ Installation method plug and play desktop_x000D_ Frequency response 20Hz-20KHz_x000D_ Level Loss 0.03% @ + 22dBu_x000D_ Insulation resistance DC1000V 100M_x000D_ Isolation voltage AC 50Hz-60Hz/0V-1500V_x000D_ Wiring port RCA_x000D_ Weight 100g_x000D_ Dimensions: 72 x 40 x 25mm LWH_x000D_ Hot swap support hot swap_x000D_ Material: Metal_x000D_ colour: black_x000D_ _x000D_ Package Contents:_x000D_ 1 x audio isolator_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_