Why should something be made with dozens of components when it can be done with just 2?

Examples are Pleiades one transistor or one electron tube mic booster amplifiers or headphone, loudspeaker power amplifiers.


For example the:


Pleiades Electra 2 headphone amplifier


Pleiades 2N3053 speaker power amplifier


Pleiades V6 mic booster electron tube head amplifier


Pleiades K117 mic booster JFET head amplifier