A1 music fax preamp

Actual picture (not ready yet, I will verify it, so I didn’t use too good components). The preamplifier has few peripherals, so please be sure to use high-quality supplementary components!
The op amp holder is optional (it is recommended not to use it),
the resistor metal film is enough, and the potentiometer should be better, it is related to the sound quality, at least alips!
There are material names on the board, the resistor is basically a quarter of a watt, and the capacitor has a voltage resistance of more than 25v!
For a single-layer board, please pay attention to the jumper part on the board. You can use copper wire to
double-layer it. I am too lazy to draw it. (If you connect the jumper yourself, it will be double-layer.)
The file is in the attachment. The file is in the attachment. The file is in It’s in the attachment!
Just drag it to the ordering assistant. (I don’t know why, the professional version can’t be imported. Someone can download it.)
Do not use it for commercial purposes! If you proceed, please consciously pay 1% of the amount!