1. The power amplifier board adopts a fully complementary paired circuit design, using 4 FET TP33C or 1047S power amplifier tubes and components to the stable performance of the whole machine, making it strong in output power and good sound quality. The heat sink is equipped with a fan. And has a complete and sensitive protection function2. This board uses a fan cooling system, which is designed for long-time workers and will not affect the sound quality due to heat.3. Bluetooth 5.0 HIFI sound quality power amplifier board, 100w+100w output power4. The maximum value can reach 180w+180w5. Volume , mixing , simple and convenient design, easy to operate. You can adjust the volume as you like, mix with any mix, increase the fullness of the music, and create your own microphone.Plug Type:EU Plug,it applies to Indonesia, , , , and so onColour: as shownMaterial: ABSSize: 20 x 13 x 7.5CMPackage Contents:1 amplifier boardOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.