The TPA3255 is a high-performance Class D power amplifier with Class D efficiency and 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 entire audio frequency band while delivering perfect sound quality. The device works in AD mode. with a maximum output of 600WX2/2R or 300WX2/4 ohm or 200WX2/8 ohm load and has a 2 VRMS analog input interface that supports connection with high-performance DACs (such as TI's PCM5242) seamless connection. In addition to excellent audio performance. the TPA3255 combines high power efficiency with ultra-low power level idle losses (less than 2.5W). Features: 1. Using 2 pieces of American Tl-TPA3255 power amplifier modules. the output power separation is much that of a single chip. 2. The front-end differential input circuit adopts boost technology. and the listening feeling is more dynamic than the single 12V line. 3. Fully shielded. airtight and low-loss sealed inductor. filter capacitor. no pressure at 55V Product indicators: Output power: 600Wand600W/2 ohms. 315Wand315W/4 ohms. 200Wand200W/8 ohms Frequency response: 20HZ-30KHZ andN: 0.006 percent at 1W/4 Less than 0.01 percent at clipping Power supply voltage: positive 19V to positive 52V PCB size: 138X128MM Note: The higher the input power supply. the greater the power supply current and the greater the output. The power test is measured at 50V power supply. If you switch to a 24V36 low-voltage power supply. the output power be reduced accordingly. Colour:black Material:ABS Package Contents: 1 x HIFI digital amplifier board (without Bluetooth) Only 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.