
150W audio power amplifier circuit diagram using 2SC2922 & 2SC1216 incorporates high-quality components, including the 2SC2922 and 2SC1216 transistors in the output section, along with the BD139, BD140, BC637, BC638, 2SK30, MJE340, 2N5401, and BC546BP transistors in the driver and preamplifier sections.