The TPA3255 is a high-performance Class D amplifier chip with Class D efficiency and a circuit that delivers true high-end sound quality. The device features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra HD). This technology allows the device to maintain ultra-low distortion across the audio band while delivering sound quality.Operating in AD mode, the device can drive up to two 315W/4R loads and two 150W (unclipped )/8R loads at 1.5% THD, and features a 2 VRMS analog input interface for seamless connection to high-performance DACs such as TI's PCM5242.In addition to excellent audio performance, the TPA3255 also combines high efficiency and ultra-low -level idle losses (less than 2.5W). This is achieved through an 85mR MOSFET and an optimized gate driver scheme.This solution provides a significant reduction in idle losses compared to traditional discrete implementations.Product parameters amplifier IC: TPA3255 chipInput : 3.5MM stereo wired socket interface (3PWork efficiency: Greater than 90%Output : 315W/4, distortion 1.5%; 185W/8, distortion 1.5%; 260W/4, distortion 1%, ; 150W/8, distortion 1%2Frequency Response: 0Hz to 20KHzDynamic range: Greater than 100 dBSignal to Noise Ratio: (SNR) Greater than 111dB supply: DC19 to DC48V [current recommended above 5A]Overall size: 110 x 70 x 30MMMaterial: PCBcolour: BlackPackage Contents:1 x Amplifier Board Module1 x Audio cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.