What is Reddit's opinion of Designing Audio Power Amplifiers?

From 3.5 billion Reddit comments

It's a very old design, you can do much better today with modern components. There are vastly better opamps than the 741, vastly better discrete power transistors than the 2SC3858 (in the obsolete MT200 package!), and vastly better circuit topologies for the output stage than quasi-complementary.

I suggest you purchase and carefully read Bob Cordell's book Designing Audio Power Amplifiers to learn about modern audio amp designs . . . . including class-A, class-AB, and class-D .

Bob Cordell's book Designing Audio Power Amplifiers does a good job of introducing real world circuits that include feedback loops.