The TPA3255 is a highperformance Class D power amplifier with Class D efficiency and true highend sound quality. The device features an advanced integrated feedback design and proprietary highspeed gate driver error correction (PurePath Ultra HD).This technology allows the device to maintain ultralow 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 highperformance DACs (such as TI's PCM5242) seamless connection.In addition to excellent audio performance, the TPA3255 combines high power efficiency with ultralow power level idle losses (less than 2.5W).Features:1. Using 2 pieces of American TlTPA3255 original power amplifier modules, the output power separation is much that of a single chip. 2. The frontend differential input circuit adopts boost technology, and the listening feeling is more dynamic than the official single 12V line. 3. Fully shielded, airtight and lowloss sealed inductor. filter capacitor, no pressure at 55VProduct indicators:Output power: 600W+600W/2 ohms, 315W+315W/4 ohms, 200W+200W/8 ohmsFrequency response: 20HZ30KHZ+N: 0.006% at 1W/4; Less than 0.01% at clippingPower supply voltage: positive 19V to positive 52VPCB size: 138X128MMNote: 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 lowvoltage power supply, the output power be reduced accordingly.Colour:blackMaterial:ABSPackage Contents:1 * 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 +/ 13cm.