This is a bare board of a high-end pure class A headphone amplifier. The design is reference to Lehmann Linear headphone amplifier. The amplifier has a class A output stage. Sonically the amplifier has a relaxed, open and neutral sound. The class A output stage allows the amplifier to drive any impedance with ease. We do air shipping worldwide at US$6.00. Board thickness : 2mm.
Copper thickness : 70um - 4 times of normal board copper thickness ! We provide schematic and part list to the buyer.