RCA Audio Ground Loop Isolator Anti-Interference Noise Reducer Eliminate Current Sound Bluetooth Receiver1. Shell material: ABS2. Stereo sound quality, delicate and transparent, effectively remove the interference noise in the transmission of audio signals3. RAC interface, plug and play, metal plug, no need to download and install any software4. Easy to use, plug and play, no batteries, compact and portable, does not occupy space5. Pure sound quality, no rock music damage, give you a better experience, can be used on mono channel6. Works with any portable device with 3.5mm audio jack, suitable for car audio systemhome stereo7. Eliminates hum, eliminates hum caused by ground loops when the audio source and (some car speakershome audio systems) use the same power source for clear music enjoyment8. The product can only eliminate the noise and current noise caused by common power and common ground products, but not eliminate the noise caused by other reasons, so you need to confirm the source of noise by yourself9. Weight: about 56g10. Size: about 7.5 x 3.7 x 2.1cm