2SJ113/2SK399 SEPP AB-40W stereo power amplifier, no feedback, the DC system
MOS-FET power output stage, a simple voltage・Miller called the NFB minor loops in multiplied by a powerful, and put on overalls with the NFB, has achieved very low output impedance, the natural sound of the amplifier.Lead chassis S4 (300 × 200 × 60) is used. Both sides in the handmade SHIMASHITA wood paneling.
Block on the chassis are amplified voltage capacitors and a small stage for those who for the power transformer and the radiator and looks imposing, but the real thing is compact and lightweight.
Input terminals and output terminals to a lot of effort SUPATORON.At the bottom of the radiator board SHI MOS-FET power output stage and to shorten the wiring, the gate RENAKU series resistance does not even oscillation.
Just change a little wiring, the source follower circuit voltage circuits in the mirror can be changed.
Miller-voltage operating conditions of the basic design is satisfactory, the source follower to change to get high-quality sound.
Block on the chassis are amplified voltage capacitors and a small stage for those who for the power transformer and the radiator and looks imposing, but the real thing is compact and lightweight.
Input terminals and output terminals to a lot of effort SUPATORON.At the bottom of the radiator board SHI MOS-FET power output stage and to shorten the wiring, the gate RENAKU series resistance does not even oscillation.
Just change a little wiring, the source follower circuit voltage circuits in the mirror can be changed.
Miller-voltage operating conditions of the basic design is satisfactory, the source follower to change to get high-quality sound.
