G1 3.5mm Audio Noise Reduction Isolator Bluetooth Receiver

1. Hum Elimination: Eliminates the hum caused by ground loops when the audio source and (some car speakers/home audio systems) use the same power supply, resulting in clear music enjoyment and excitement blossoming from there.
2. Pure sound quality: no harm to rock music, give you a better experience, can be used in mono
3. Easy to use, just plug and play, no battery required
4. Small and portable, this device does not take up much space and is easy to remove
Noise problems cannot be eliminated:
This model cannot filter out noise caused by uncommon ground, such as electromagnetic interference, etc. Please be sure to confirm the source of the noise before purchasing.
Because everyone has different expectations for the insulation effect and has different senses, some customers think it is good and others think it is not good.
This product is an audio common ground isolator, which is effective for noise caused by common ground between the audio source and the receiving device.
Simply put, common ground means that the grounding points of two electrical devices are not at the same point. Due to the difference in grounding resistance, noise is transmitted to the electrical equipment through the ground wire, creating interference. Because the grounding points of the two devices are different, common ground noise may be generated. This is manifested in car audio, that is, there is a kind of audio interference, a whistling-like hum. The frequency of this noise will change with engine speed.
Therefore, this product can only eliminate noise and current noise caused by products with common electricity and common ground, but cannot eliminate noise caused by other reasons, so you must confirm the source of the noise yourself.
Determine if the noise is caused by a common ground:
1. Use headphones to connect to the AUX (3.5mm interface) of the car MP3 and car navigation. If there is no noise from the headphones, it can be confirmed that the noise of the car equipment is caused by the common ground.
2. Use an 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 source in the car, such as a telephone) to the AUX in the center console of the car, and play the music of the mobile phone, so that there is no noise at this time, it can be confirmed that the noise in the past was caused by the common ground
3. Computer, power amplifier, stereo, CD: Use passive headphones to plug in the computer to test whether there is noise, use a mobile phone to plug in the power amplifier and stereo to test, if there is no noise in the two listening separately, the basic judgment is caused by a common ground
4. After starting the car, the installed power amplifier has a current sound, and some models may also have a situation where the greater the throttle, the louder the current sound. This product can solve this problem.
5. If 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. When the laptop is connected to both the projector and the power amplifier at the same time, there is noise. You can either connect the laptop to the adapter or use the battery. At this point, the noise disappears when the power amplifier is unplugged, or the noise disappears when the projector is unplugged. You can then connect the headphone jack and the power amplifier to the computer. A common ground isolator is added between them to eliminate noise.