This is an Aikido 6N2P-EV + 6N30P-DR Tube preamplifier. I used switching powersupply for filament heating. All resistors are 2W metal-film. Output capacitors are 2uf Russian KBG-MN type paper in oil. I tried 6N1P-EV and 6N23P-EV but, 6N2P-EV sounded best. Actually i build this preamplifier to directly amplify TDA1541A dac chip's analog signal out in my Marantz CD80 cd player. Sounding amazing!

Comments