Input voltage: AC 110V or 220V
PCB Size: 206mm * 185mm
Maximum output power: 1.5 W (16 ohm load)

Match headphone impedance: 4-1000 ohms

Maximum Conversion Rate: 32 ohm 16vpp

Gain: 15 dB

Frequency response: DC-100,000 Hertz less than 0.15 dB

Background noise: Less than -113 dB

Total harmonic distortion: less than 0.003% (13vpp, 32 ohms)

Main materials:  All capacitors use genuine ELNA.  1 PCS ALPS Type-27 potentiometer. BBOPA2134 op amp. 15W BingZi sealed transformers. the power Transistor is original imported ST TIP3055. Power part ST TIP2955.

NOTE: We have DIY kit or finished board (Optional)