сабвуфер amplifier board uses four field effect high push tubes topropel an 8-12 inch сабвуфер . У совета также есть схема защиты спикера. С отдельной предварительной настройкой, сборка очень удобна.: SUB250W Speaker AmplifierWorking voltage: Double AC22 - 26voutput: 250W (max)Chip Type: FETOp amp type: 4558pre-timing: Volume + adjustmentWeight:400gColour: greenMaterial:Abspackage Contents: 1 X сабвуфер Amplifier Board 250wonly the above package content, other products are not included.Note: Light and different displays may the color of the item in the little different from the real thing. The measurement allowed error is +/- 1-3 см.