The input voltage is DC 10-15V and the test condition is 12V as an example: the power amplifier board suitable Compatible With TDA8954 chip with an output voltage of plus or minus 39V the power amplifier boardsuitable Compatible With IRS2092 chip with an output voltage of plus or minus 56V and the auxiliary voltage is plus or minus 15V regulated power supply Suitable Compatible With pre-board; of course it is also suitable Compatible With class AB power amplifier.Power supply requires a current of tens of A please use thick wires to avoid loss of power supply.Colour:As shownMaterial:MetalPCBSize:9.2 x 9.6 x 5.2cmPackage Contents:1 * Boost Power BoardOnly 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.