This is a Music Solo Headphone Amplifier KIT, assembled board or separated components with PCB. Note, you will need +/- 12-18V AC powers and DIY your own case to make an completed AMP.
Circuit Diagram and PCB
PCB Size: 95*67MM
Power supply: 2*15V AC Max 15W
Input: L/R Audio in soldering pins
Output: L/R 6.5mm jack