1、The sound quality is super good, the treble is delicate, soft, without obvious harshness, no current impact noise and no static noise at startup 2、The core of the power amplifier board is the original imported TDA7297 2 channel power amplifier chip 3、The PCB circuit board uses FR-4 high-quality fiber board with a thickness of 6mm, the wiring is reasonable and the component layout is compact. 4、With binding posts and 0 dual-channel 15W+15W, it can be connected to speakers, small size and large volume, wide range of applications. 5、Strict quality control and quality assurance, high safety factor, can be used with peace of mind 1 x Amplifier Module1 x Nut1 x Gasket Item Type: Amplifier ModuleVolume: Length x Width x Height: Approx. 50 x 50 x 42mm / 2 x 2 x 1.7in (without potentiometer handle), ultra-small volume suitable for any space.Voltage: DC 9-15V, recommended DC voltage 12V, current 2A or morePower: 15W+15WOutput Impedance: 4-8Ω