Feature:1. HIGH PERFORMANCE TPA3255 CHIP: TPA3255 is a high performance Class D power amplifier chip, which has Class D efficiency and can bring good sound quality circuits.2. ADVANCED FUNCTION: This device features advanced integrated feedback design and proprietary high speed gate driver error correction function. This technology enables the device to maintain ultra low distortion throughout the entire sound frequency band while showcasing sound quality.3. 2 VRMS ANALOG INPUT INTERFACE: It also has a unique 2 VRMS analog input interface and supports seamless connection with high performance DACs (such as for PCM5242).4. AD MODE: This digital amplifier board operates in AD mode and can drive up to 2 315W 4R loads and 2 150W (unshipped power) 8R loads at a THD of 1.5%.5. TWO MAJOR ADVANTAGES: TPA3255 also has two major advantages, high power efficiency and ultra low power level idle loss (less than 2.5W). This can be achieved through an 85mR MOSFET and an optimized gate driver scheme. This scheme can significantly reduce idle loss compared to traditional discrete implementation schemes.Specification:Item Type: Digital Amplifier BoardMaterial: PCBFrequency Response: 20Hz To 20KHzDynamic Range: >100dBSNR: >111dBOperating Efficiency: >90% .Package List:1 x Digital Amplifier Board1 x Connection Cable4 x Screw