ZK-AS21P High Power 2.1 Bluetooth HiFi Audio Power Amplifier Module 300W+300W+600W High Performance AmplifierFeatures:- 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.- Thickened heat sink, silent and long-life fan; Solved the heat dissipation problem and better utilized the advantages of high power- Transparent sound, fast low-frequency response, strong mid frequency texture, high frequency smoothness, and minimal tangent loss- Extremely low noise, pure sound quality, extremely low distortion, protecting your original sound experience- 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.Package Included:- 1 x Power Amplifier Module