The parts are simple, easy to make, and the sound reaches a very high level. It is worth making by fans. The big tube is the famous sound tube of , IRF240 pair. High-quality components are for resistors and capacitors, and most of them are audio capacitors of in Europe, America and Japan. The circuit architecture and high-quality circuit board design form the soul of this power amplifier board. The carefully parts that the conditions are raised first. Only need to add high-quality power supply, you can get a surprise sound. tube characteristics of MOS tube power amplifiers, high input impedance, fast switching characteristics of voltage control current, low on-resistance, low output impedance, all these advantages are the inherent advantages that triode power amplifiers do not have, and it is worth trying to make one. A fever-level HI-END power amplifier, this power amplifier circuit has the reputation of being a 100W power amplifier terminator in foreign forums. Material: PC+Metal. Color as shown Product introduction: Working status: MOS tube drives Class A and B Output power: single channel 100W, dual channel 200W Working voltage: ±35V - ±55V Distortion: is 0.012% into 1 kilohertz and full power is 0.015% into 10 kilohertz and full power Input interface: mono signal input Output interface: mono speaker output Power supply mode: dual power supply working mode PCB specification: FR4 90X54X1.6MM, compact board design, suitable for small space and small chassis installation. Package Contents: 1 x Audio Power Amplifier Board(Fully assembled) 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 +/- 1-3cm.