3.5mm Audio Aux Cable Anti-interference Ground Loop Noise Filter Isolator Eliminate Cancelling for Home Stereo Car Audio System

feature: 1. [Eliminate the hum]: Eliminate the hum generated by the ground loop when the sound source and (some car speakers/home audio systems) use the same power supply to achieve clear music enjoyment, and the excitement will start from now on. 2. [Pure sound quality]: There is no harm of rock music, giving you a better experience, you can use it in mono. 3.【Easy to use, plug and play, no battery required】: Small and portable, this gadget does not take up space and is easy to carry. (Size: 20MM×20MM×60MM) Can't get rid of noise problem: ① The noise caused by non-common ground cannot be filtered out by this model, such as electromagnetic interference, etc. Please confirm the source of the noise before purchasing. ②Because everyone has different expectations for the isolation effect and different senses, some customers think it is good, and some customers think it is not good. This product is an audio common ground isolator, which is effective for the noise generated by the common ground of the audio source and the receiving device. To put it simply, the common ground means that the grounding points of the two appliances are not at the same point. Due to the difference in grounding resistance, noise is introduced into electrical equipment through the ground wire, causing interference. Common ground noise may occur due to the different ground points of the two devices. In the car stereo, there is an audio disturbance that resembles the hum of a whistle. The frequency of this noise varies with engine speed. Therefore, this product can only eliminate the noise and current noise generated by the common power and common ground products, but cannot eliminate the noise caused by other reasons, so you need to personally confirm the source of the noise. To determine whether the noise is caused by common ground: 1. Use the headset to connect the car MP3 and car navigation AUX (3.5mm interface). If there is no noise in the sound heard from the earphone at this time, it can be confirmed that the noise of the in-vehicle equipment is caused by the common ground. 2. Use the audio cable to connect the battery-powered mobile phone or MP3 (note that the mobile phone and MP3 should not be connected to any power supply in the car, such as a phone), the AUX of the center console is on the car, and the mobile phone music is played at the same time, there is no noise at this time, you can confirm the previous Noise is caused by common ground. 3. Computers, power amplifiers, stereos, CDs: Use passive earphones to plug in the computer to hear whether there is noise, and use the mobile phone to plug in the power amplifier and stereo to audition. If there is no noise, the basic judgment is caused by common points. 4. After starting the car, the installed power amplifier has current noise, and some models will also have the situation that the larger the throttle is, the greater the current noise will be. This product can solve this problem. 5. There is a current sound between the power amplifier and the speaker or the speaker. This product can be installed between the power amplifier and the speaker. 6. Connect the laptop to the projector and the power amplifier to the power amplifier, there will be noise. You can connect the laptop to an adapter power source or use a battery. At this time, the noise disappears after unplugging the power amplifier, or the noise disappears after unplugging the projector, you can use the headphone jack and the computer power amplifier. Add a common ground isolator to eliminate noise.