Feature: 1. NOISE REDUCTION: With a wide range of applications, this noise isolator can help you reduce noise in your car and home speaker electrical system and provide you with HiFi quality sound output. 2. MULTIPLE INTERFACES: The ground loop noise isolator comes with 3.5mm stereo sound jack and AV sound jack for wide compatibility. Compact and portable, it can be used in conjunction with car speaker systems, home speaker. 3. HIFI SOUND: This ground loop noise filter can be used with devices such as amplifiers, speakers or mixers with stable and reliable performance, so you can enjoy perfect sound. 4. EASY TO USE: Connect the left and right channels of the AV sound cable correctly or use a 3.5mm sound cable, with noise reduction switch on the output port, you can easily install the sound model isolation transformer without any complicated tools. 5. PREMIUM MATERIALS: Sound isolator is made of premium aluminum alloy housing, which is sturdy and allows for the best signal quality and greatly reduces unwanted electro magnetic interference, radio frequency interference. Specification: Item Type: Noise Isolator Material: Aluminum Alloy Input Impedance Range: 600Ω-10KΩ (AC Impedance) Output Impedance Range: 600Ω-10KΩ (AC Impedance) Frequency Response: 20Hz-20KHz (±＜0.7db ref 1KHz) Fixed Loss: ＜0.7db (ref 1KHz 1V rms) Insulation Resistance: DC 1000V 100MΩ Isolation Voltage: AC 50Hz-60Hz 0V-1500V. Package List: 1 x Noise Isolator1 x User Manual