4-65a HT Power supply 1 Here is my final 300V raw HT supply (one of several) at I will be using in my 4-65a SE amplifier. Output ripple is 30mV @ 300V / 90mA Related Author: Ale Moglia "A mistake is always forgivable, rarely excusable and always unacceptable. " (Robert Fripp) View all posts by Ale Moglia