This is a bare board of a high-end headphone amplifier. The design is based on Beyerdynamics A1 headphone amplifier. The original headphone amplifier cost more than US$800.00. We have based on the original amplifier circuit while the protection circuit we employed the well proven upc1237 as to make a more compact board design. Dimension : 112mm x 122mm We do air shipping worldwide at US$6.00.
We provide schematic of the amplifier section and part list to the buyer by email attaching to the shipment notice.