Note: The kit needs to be welded by yourself.
Features of this previous stage:
Independent routing of each channel and independent decoupling capacitors make the circuit have a high degree of separation
Each channel passes through 3 op amps, which can easily adjust the unique sound performance
High-precision CNC Immersion Gold Process Circuit Board
PCB size: 9.4×8.6cm
Power supply: dual 10-20V is required, with 7815 7915 voltage stabilized internally