Historical expose. Development of better performing transistors for hifi.

[EJ3]

For example;
STK8280II 80W @ 8 Ohm's THD 0.005
And there is a bunch of them with 0.004~0.005 THD (that are best performing one's).
Source: 5000-IC-Power-Audio-Amplifiers (good book, where you can also find schematics [free in pdf]).

Thanks for the source book info: wow!