Aknowledging Dr. Rutter for giving the very interesting book : Audio Amplifiers - Ed. J.R. Davies

It contains on page 41 the brilliant article 2-Transistor Miniature A.F. Amplifier by K. Jones which formed perhaps 2 decades ago the basis of the Pleiades single transistor amplifier by removing one by one most components. These amplifiers sound very nice as expected from pure class A (electrons flowing all the time) circuits. Using just one transistor creates simple harmonic distortioon components when it starts gently overloading.