Homemade high-quality integrated power amplifier 01

When making a self-made power amplifier, emphasis should be placed on keeping the circuit simple and clear. First, it improves the success rate of self-made power. Second, it reduces costs as much as possible. Third, it is
easy to purchase components, and the production of the entire circuit will not be affected by the difficulty of purchasing a certain component . Fourth, in the circuit, Abandon the tone adjustment circuit
and adopt the straight-through method, because for real audiophiles, tone adjustment is undoubtedly redundant, and
the most important thing is perfect and original music reproduction. The principle of
    the power amplifier and the principle of the power supply are shown in Figure 7-28 and Figure 7-29. This circuit seems a bit complicated at first glance.
After further analysis, the circuit is quite simple and clear.