Overview This model uses 2 original imported TPA3255 amplifier chip design, dual-core more stable, TPA3255 is a high-performance Class D power amplifier, it has Class D efficiency and can, to bring the real high-end sound quality, the device is unique advanced integrated feedback design and proprietary high-speed gate driver error correction function (PurePath HD). This technology allows the device to maintain ultra-low distortion throughout the audio frequency band while delivering high-definition sound quality. Features 1.Adopt TPA3255 chip, audio power core, high performance, low power consumption, high definition sound quality and comprehensive protection mechanism. 2. With protection function, power reverse connection protection is safer. 3. Easy to use, high and low independent tuning, more convenient to use. 4. Low loss, the use of digital amplifier special inductor, lower loss. 5. Multiple decoding, support Bluetooth audio decoding, support U disk decoding. Specification Product Name: Bluetooth Audio Amplifier Product Model: XY-AS21HPA Power supply: DC19-51V/10A or above DC seat interface: 5.5-2.5MM Bluetooth version: 5.2 Audio input: Bluetooth + AUX + U disk + USB sound card Bluetooth audio decoding: AAC SBC U disk decoding: WAV, FLAC, APE, MP3 Left and right channel output power: 30W+30W @ 8Ω/24VDC 70W+70W @ 4Ω/24VDC 80W+80W @ 8Ω/36VDC 160W+160W @ 4Ω/36VDC 160W+160W @ 8Ω/50VDC 300W+300W @ 4Ω/50VDC Subwoofer output power: 30W @ 8Ω/24VDC 70W @ 4Ω/24VDC 150W @ 2Ω/24VDC 80W @ 8Ω/36VDC 160W @ 4Ω/36VDC 350W @ 2Ω/36VDC 160W@8Ω/50VDC 300W@4Ω/50VDC 600W@ 2Ω/50VDC Dimensions: Potentiometer one-piece type: 124*124*32mm Housing integrated type: 124*142*44mm Potentiometer external type: 124*124*32mm List 1 x Amplifier board