Features: 1. Using T-exas TPA3255x2.The electrolytic capacitor adopts a total capacity of 470UFx8 2. When using PBTL bridge, it can output 600Wand600W maximum power under 4 ohm load 3. Select high-precision chip resistors to a good signal-to-noise ratio of the whole machine. 4. PCB adopts 1.6mm thick double-sided board, 2.0 oz copper thickness, full tin spraying process, guaranteed size Good current passing performance. First-class PCB quality. 5. The output adopts a red-gray ring high-current audio special inductor to a clear and powerful sound. Product description: TPA3255 is a high-performance class D power amplifier, it has class D efficiency and can bring true high-end sound quality. The device features advanced integrated feedback design and proprietary high-speed gate driver error correction function (PurePath Ultra HD). This technology allows the device to maintain ultra-low distortion throughout the audio frequency band while exhibiting perfect sound quality. The device works in AD mode. When the is 10 percent , it can drive up to 2 315W or 4R loads and 2 150W (unclipped power) or 8R loads, and has a 2 VRMS analog input interface that supports high-performance DAC (For example, TI's PCM5242) seamless connection. In addition to excellent audio performance, TPA3255 also has two major advantages: high power efficiency and ultra-low power level idle loss (less than 2.5W). This can be achieved with an 85mR MOSFET and an optimized gate driver scheme. Compared with the traditional discrete implementation, this solution can significantly reduce idle loss. Basic performance parameters: Working : Class D Quiescent current: 65mA Work efficiency: 90 percent rated Output power: 2x600W or 4 Ohm Frequency response: 20Hz to 20KHz Working voltage: DC24V-DC48V Recommended power supply voltage: DC36V or DC48V above 10A Board Material:plastic colour: Black Package Contents: 1 x Digital Power Amplifier Board 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.