Meters -1pc Stereo Audio Common Ground Isolator Signal Noise Filter Board Computer Audio High Reducibility Highlights Generic Brand 1pc Common Ground Audio Stereo Isolator Signal Noise Filter Board Computer Audio High Reducibility Description: Parts Selection: Parts made of high-quality materials, with high sensitivity: high reducibility, it is full and pure of the same type of sound Circuit design: independent two-channel stereo design, it is very suitable for car internal installation such as a small space. Connection mode: via 3.5mm headphone jack input and output. Main functions: The elimination of current sound, the elimination of co-ground isolation audio transformer AUX ground current sound, the output ground wire and the output ground wire are transformer isolated, no ground common specification: 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 electrical equipment through the ground wire, causing interference. Since the ground points of the two devices are different, a common ground noise may be generated. In car audio, there is some kind of audio interference, like a whistle sound, the frequency of this noise will change with engine speed. Therefore, this product can only eliminate the noise and current caused by grounding electrical and common products, but cannot eliminate the noise caused by other reasons, so you must personally confirm the source of the noise. Size Chart: Size: 50x50x15mm / 1.97x1.97x0.59inch Package includes: 1 noise filter panel Note: Color may be slightly different due to the color calibration of each individual monitor. Please allow slight measurement deviation due to manual measurement.