On the other hand, in Sziklai pair amplifier [10], as shown in
Fig.2, Q1 transistor of the Darlington’s amplifier is replaced by
a PNP (Q2N2907A with β=231.7) transistor. In addition, an
extra biasing resistance RD between collector of transistor Q1
and ground is introduced and emitter of upper PNP transistor
Q1 is directly connected with DC supply voltage.