All aluminum alloy chassis, luxury material. Referring to HDAM circuit, the power chip is MJ15024 and MJ15025. There are 3 sets of RCA signal input, which can be switched freely. The output power of 8 ohms is up to 80W+80W. Frequency Range:20HZ/20KHZ Size: 280*210*77mm. Net weight: 5.6kg. Weight after packing: 7.0kg.