Magnepans sound spectacular with 833-A SET and Hammond 1642SE output transformers. The 833-A sounds best at 1000 plate volts and zero grid bias, but the cathodes draw 10 amps at 10 Volts and have to be pure DC meaning the final filter capacitors for the filament heaters have to be 4.5 Farads or you have to use car batteries with 0.26 Ohm dropping resistor. You can't buy such tube amplifiers, you have to build them yourself or get someone else who had done it at least guide you in building it.
