1. WisWinDa Pro X4 is Multi Channels Ground Loop Noise Isolator/Noise Filter which support XLR/6.5/RCA/3.5 connectors could help you to reduce the noise from the car&home audio electric system, gives you HiFi quality sound output. Perfectly solve car and home stereo ground loop noise problems.
2. Pro X4 is Multi Channels Hum/Buzz Eliminator is Play&Play design wtih high quality aluminum shell, sturdy and resist, which has long durability.
Input: 3.5 AUX*1, XLR X 2, 1/4" TRS x 2, RCA x 2 Output: XLR X 2, 1/4" TRS x 2, RCA x 2 Input/Output Impedance: 600Ω / 10K Frequency Response: 20Hz-50KHz (±<0.2db ref 1khz) Level Breakdown: <0.7db (ref 1khz 1V rms) Insulation Impedance: DC1000V 100Ω Isolation Voltage: AC50Hz-60Hz / 0V-1500V