A1 Headphone Amplifier DIY Kit Chassis Amplifier Module Based on Beyerdynamic BD139 BD140 Free shipping

Brand Name: HIFivv audio Input Type: RCA,LINE IN (AUDIO IN) Output Type: LINE OUT (AUDIO OUT) Model Number: A1 Built-in Battery: No Recommended Headphone Maximum Impedance: >900 Ohm Channels: 2 ...