A80 DSP Amplifier Car Audio Digital Signal Processor The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Amplifier Chip TDA7850 Amplifier Peak Power 4 x 50 Watts Equalizer 31-bands equalizer (-18 dB ~ +18 dB) Adjustable Frequency Range 20Hz ~ 20kHz High-Level RCA 4 channels output / 4 channels input Low-Level RCA 8 channels output / 2 channels input Operating Voltage 12 ~ 14 V Signal-to-Noise Ratio ≥90 dB Total Harmonic Distortion ≤0.01%, Sampling Rate 48 kHz / 24 bit Audio IC AKM7735 Dimensions (inches) 6.5" (L) x 5.1" (W) x 1.7" (H) 4 Tuning Modes, Manual/Computer software/Phone APP/LCD Controller modes Manual Tuning : Users adjust sound settings (Tweeter, Midrange, Bass, Subwoofer) for a personalized experience. Requires time and skill but offers full control.Computer Software Tuning : Uses software for precise audio adjustments, ideal for detailed control and high sound quality.Mobile APP Tuning : Connects via Bluetooth to a phone app for easy, on-the-go audio adjustments.LCD Controller Tuning : Adjust settings directly with an LCD controller, offering a simple, user-friendly experience. 10-Channel DSP Audio Input/Output High-Level 4-Channel Audio Output + 4-Channel Audio InputLow-Level 8-Channel Output + 2-Channel Low-Level (AUX) InputCompatibility with Multiple Audio HostsEnhanced Sound Quality ExperienceComprehensive System Improvement The picture explain the details about each wire and its corresponding connection Note: Follow the manufacturer's instructions for proper connection.By following the wiring instructions, you can ensure the AINAVITO A80 Car DSP Processor is installed correctly for optimal performance and sound quality. Each connection is designed to improve flexibility and compatibility.If you have any wiring issues, refer to the tutorial video or ask us for assistance. If the DSP does not work and there is no sound ? Case 1: Check whether the positive and negative terminals of the power supply, ACC, and high-level input and output are connected correctly. Case 2：Please check whether the input and output speaker wires are grounded or short-circuited. If the DSP does not work and there is no sound ? Case 3：The positive ACC line must reach 12V. Check if the ground wire is correct and secure. Case 4：Check if the wiring harness fuse is burnt out. Case 5：Please check whether the input mode is selected correctly DSP device can’t control or adjust sound? Case1: Check the host DSP switch, you need to turn on the Manual/PC control (ON). Case2: Please check if the LCD controller is switched to the correct mode. (Note that incorrect mode will result in no sound) If the sound is low, electric current sound, crackling sound, impact sound, or abnormal sound occurs, please check these Case1: Are the sound volume, sound frequency, etc. settings too high Case2: Change the installation location to avoid power interference. When the DSP is connected to an external device and there is an impact sound Case1: Please disconnect the REM line of the external amplifier, connect the REM line of the added device to the DSP "REN" line, and switch the DSP (ACC and HOST) switches at the same time and try once each.