Positive and negative power supply rectifier board, suitable for transformers below 24V, rectifier output +VCC/GND/-VCC, use 20A new electric element Schottky rectifier bridge, internal resistance is very low, filter capacitor uses 4 genuine disassembled capacitors, each capacity 18,000 UF, the capacity of the entire board is 72,000 UF. The capacitors are from international brands such as Panasonic and Nikon. The effect is much better than some brand-new ones. It is suitable for PSAA power amplifier boards and other power amplifier boards with power supply below plus or minus 35V.