1. High current, low magnetic loss, small parasitic capacitance, low heat generation, use of oxygen free copper wire to improve sound quality; The magnetic shielding mechanism has strong anti electromagnetic interference EMI performance. 2. Thickened heat sink, silent and long-life fan; Solved the heat dissipation problem and better utilized the advantages of high power 3. Transparent sound, fast low-frequency response, strong mid frequency texture, high frequency smoothness, and minimal tangent loss 4. Extremely low noise, pure sound quality, extremely low distortion, protecting your sound experience 5. High density wrapped shielded wire+high-quality connectors; The outer winding shield is produced by twisting high-density environmentally-friendly tinned copper wire, with high density, which plays a good shielding role in connecting signals. Note: 1. Power supply and audio cable are not included in the delivery. 2. The input does not support AC power, please use DC power! 3. The input power cannot be reversed or exceed 51V, otherwise it will burn out! Colour:Black Material:PCB type:A: With leads/B:Without leads<br><br>Package Contents: 1 x Amplifier board 1 x 3P double ended shielded wire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.