1.[TPA3251 HIFI chip]Adopting TPA3251 chip solution, stereo 2.1 channel output, ensuring continuous high-power operation, wide voltage input DC: 12-38V, this amplifier board uses two TPA3251 high-fidelity chips, and the maximum output power can reach 220W2+350W. 2.[Multiple input methods]S350HS has multiple input methods such as Bluetooth, 3.5mm AUX, USB sound card, U disk, etc., which is compatible with most devices. You can easily choose your favorite input method. 3.[Control by APP]In order to tap the maximum potential of this amplifier board through APP control, we have developed an application for it. You can set the Bluetooth name and password through this application 4.[Upgraded DC socket] The gold-plated high-current shielded DC socket has a specification of 5.5 2.5mm, which will not generate sparks when connected to the power supply, making it safer and more reliable. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store