Features:1. Pin-to pin and case compatible types with variable electrical characteristics. 2. Class B power audio amplifiers. 3. Dual ( bipolar, symmetrical ) power supply. 4. Designed to support 6 loads.Typ. 0.05 % . 5. Built-in thermal sensor for case temperature measurement. : Power Supply Voltage: AC dual 24-36V Size: width 120mm, height 65mm, depth 135mm (the size of the radiator is 120x45x60mm) Note: 1. Under the recommended working voltage AC double 35V voltage, its output power is 100WX2 @ 6 (=0.05%). The working voltage is recommended to be plus or minus 45V, and the maximum working voltage should not exceed plus or minus 52V (according to official data). 2. This product is a beta version, and it is installed and tested before delivery. The finished board with the radiator as shown in the picture will be hot when it is used in medium and high power, and it should be well ventilated in actual use. Different batches may have different appearance, which does not affect use. Material: PCB+electronic components colour: yellow+silver Package Contents: 1 Amplifier Board 4 x Copper post nuts 2 x screws 1 x three-core 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.