Features: It can perfectly drive 2-16Euro speaker! TPA3255 is a high-performance class D power amplifier chip, which has class D efficiency and can bring high-end audio quality circuit. The device features advanced integrated feedback design and proprietary high-speed gate driver error correction function (PurePath™ UHD). This technology can enable the device to maintain ultra-low distortion in the entire audio frequency bands, while displaying sound quality. The device works in AD modes. When the THD is 1.5%, it can drive up to two 315W/4R loads and two 150W (unshipped power)/8R loads, and has a unique 2 VRMS input interface, connection with high-performance DAC (such as TI PCM5242). In addition to excellent audio performance, TPA3255 also has two advantages: high-power efficiency and ultra-low power idle loss (less than 2.5W). This can be achieved through 85mR MOSFET and optimized gate driver scheme. This scheme can significantly reduce idle loss; Specifications: Material:Metal Size:Approx.12x7.3cm/4.8x2.87in TPA3255 Option Type:TPA3255 Class D Digital Amplifier Board with Bluetooth-compatible;TPA3255 Class D Digital Amplifier Board without Bluetooth-compatible; Package Includes: 1xClass D Digital Amplifier Board note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.