I am using this supply for pure class A SIT (V-Fet, 2SK180) single ended amplifier. Mine is 30V output version and is drawing 3A contiuosly. I am very satisfied with my choice. 1) The overall cost is lower than the transformer and capacitors. 2) The construction is so much easy. 3) The sound is better in lower bass. 4) The competed amplifier size is smaller, lighter!