The circuit design of the reference machine Beyerdynamic A2 power amplifier, combined with the designer's own ideas, redesigned and improved the A2-PRO professional-grade headphone amplifier, with professional-grade monitoring sound quality, and the sound is in place in one step.

The use of an integrated design reduces the cumbersomeness of assembly. Only one audio cable needs to be connected, no complicated wiring is required, and the DIY success is more efficient. It is also easy and easy to achieve zero noise!

The DAC module can be expanded in the card slot

Working voltage: AC15V*2--AC18V*2

PCB size: 185*182MM

Package list:

1 × Bare board PCB （not included any parts）

Finished version link ： https://www.ebay.com/itm/162514116202