power supply capacitors, electrolytic capacitors for anode voltages, capacitors for tube anode and screengrid voltage...
audio capacitors, coupling capacitors, oil capacitors, MKP couple caps, high-end-capacitors...
foil caps, film foil capacitors, signal capacitors, AC capacitors, block capacitors for power supplies...
variable capacitors...
potentiometers, audio pots, stereo pots, alps pot...
resistors...
discrete semiconductors...
operation amplifiers, buffer amplifiers, audio op amp...