Feature:1. [Class D] High performance power amplifier board with Class D efficiency and true high end sound quality. Switching to high accuracy chip resistors maintains excellent SNR ratios.2. [Low Distortion] Advanced integrated feedback design and proprietary high speed gate driver error correction. This allows the device to maintain ultra low distortion throughout the sound frequency band for perfect sound quality.3. [Premium Chip] Digital amplifier board adopts imported TPA3255 chip, quality is guaranteed. Using special inductors to keep the sound clear and powerful, will bring you an unexpected experience.4. [Powerful Sound] AMP board adopts sound special inductor to ensure clear and powerful sound, and the main filter electrolytic capacitor adopts 470UF 50Vx4 capacity to ensure strong power support.5. [PCB Material] Power amplifier module, PCB using 1.6mm/0.06in thick double sided plate, 2.0oz copper thickness, spray tin full process, to ensure the performance of large and small current passing.Specification:Item Type: Power Amplifier BoardMaterial: PCB, MetalChip Model: TPA3255 Operating Mode: Class DQuiescent Current: 150mAOperating Efficiency: More Than 90%Output Power:315W 4, Distortion 10% x 4185W 8, Distortion 10% x 4260W 4, Distortion 1% x 4150W 8, Distortion 1% x 4Frequency Response: 20Hz to 20KHzDynamic Range: More Than 100 DBSNR: More Than 111 DBOperating Voltage: DC24-48V.Package List:1 xPower Amplifier Board