Feature: 1. Durable and Wearable: The ground loop Isolator is made of plastic material, which is light weight, wearable and durable 2. Main Function: The ground loop Isolator can eliminate the noise generated by the car voice frequency subwoofer, improve the sound quality, and produce better sound effects 3. Simple Installation: The ground loop Isolator is easy to install, plug and play when the wiring is correct, and isolate current noise 4. Sensitive and Reliable: Suitable for any portable device with two 3.5 mm voice frequency jacks, the sensitivity is 3‑5 times that of ordinary isolators 5. Scope of Application: Widely used in recording studios, conference room amplifiers, car amplifiers, active subwoofers, players, computers and other equipment Specification: Item Type: Ground Loop Isolator Wiring: RCA Male and Female Connectors, Plug and Play Application: Stereo Voice Frequency Filters Are Suitable for Amplifiers, Speakers or Source Equipment Application: Can Be Used with Any Portable Device with 2 x 3.5mm/0.1in Voice Frequency Jacks Product Size: Approx. 3.8 x 3 x 6.5cm / 1.5 x 1.2 x 2.6in. Package List: 1 x Ground Loop Isolator