Feature:1. Class D power amplifier chip with high operating efficiency, and this circuit can deliver truly high-end sound quality.2. Fine circuit layout, with 3255 high-performance chip, black crystal balanced audio inductors, professional op-amp capacitors, high-capacity audio professional filter capacitor, freely replaceable op-amps.3. The device features an integrated feedback design and high-speed gated driver error correction, allowing the device to maintain ultra-low distortion at audio bands while delivering high-quality sound.4. Operating in AD mode, the device can drive up to two 315W/4R loads and two 150W (unclipped power)/8R loads at 1.5% THD, and features a 2 VRMS analogue input interface for seamless connection to high-performance DACs such as TI\u0027s PCM5242.5. In addition to high audio performance, the TPA3255 also combines high power efficiency and ultra-low power-level idle losses (less than 2.5W).6. This is achieved with 85mR MOSFETs and an optimized gate driver scheme, which significantly reduces the idling loss.7. High-density pure aluminum heat sinks, which dissipate heat faster for the same volumes.8. With 3.5MM stereo wired socket connector (3P).Specification:Class D power amplifier chip with high operating efficiency, and this circuit can deliver truly high-end sound quality. Fine circuit layout, with 3255 high-performance chip, black crystal balanced audio inductors, professional op-amp capacitors, high-capacity audio professional filter capacitor, freely replaceable op-amps. The device features an integrated feedback design and high-speed gated driver error correction, allowing the device to maintain ultra-low distortion at audio bands while delivering high-quality sound.Features:Class D power amplifier chip with high operating efficiency, and this circuit can deliver truly high-end sound quality.Fine circuit layout, with 3255 high-performance chip, black crystal balanced audio inductors, professional op-amp capacitors, high-capacity audio professional filter capacitor, freely replaceable op-amps.The device features an integrated feedback design and high-speed gated driver error correction, allowing the device to maintain ultra-low distortion at audio bands while delivering high-quality sound.Operating in AD mode, the device can drive up to two 315W/4R loads and two 150W (unclipped power)/8R loads at 1.5% THD, and features a 2 VRMS analogue input interface for seamless connection to high-performance DACs such as TI's PCM5242.In addition to high audio performance, the TPA3255 also combines high power efficiency and ultra-low power-level idle losses (less than 2.5W).This is achieved with 85mR MOSFETs and an optimized gate driver scheme, which significantly reduces the idling loss.High-density pure aluminum heat sinks, which dissipate heat faster for the same volumes.With 3.5MM stereo wired socket connector (3P)Specifications:Name: Audio Amplifier Board Material: printed circuit boardIntegrated circuits: TPA3255 chipInput interface: 3.5mmWorking frequency: 90%Output power: 315W/4, 1.5% distortion185W/8, 1.5% distortion260W/4, 1% distortion150W/8, 1% distortionFrequency response: 20Hz to 20KHzDynamic ranges: 100dBSignal noise ratio: 111dBPower supplys: 19-48VDC, current is recommended to be above 5AItem size: 110 * 70 * 30mm / 4.33 * 2.76 * 1.18inItem weight: 168g / 5.93ouncePackage size: 120 * 70 * 40mm / 4.72 * 2.76 * 1.57inPackage weight: 175g / 6.17ouncePacking List:1 * Audio Amplifier BoardPackage List:1 * Audio Amplifier Board