Output Impedance: 32 ~ 600 Ohm
Gain: 30dB
Frequency response: 10Hz-60KHz + / – 0.25dB
SNR:> 90dB

Feature:

Size: Width 98mm X 88mm X 45mm High
Board Size: 82MM * 92MM
Note:
20 seconds after the power plug in your headphones, shut down before you disconnect the headphones, then off!
Amp operating in Class A state, the host and power may have a fever, do not have to cover objects, pay attention to heat!

Package: 

1 x YJ 6N11 Tube headphone amplifier new