This project uses a classic complementary pair (2N3055 NPN and MJ2955 PNP). The practical PDF must include:

Focuses on circuit schematics, essential test instruments, and the final assembly of construction projects. Typical Project Example: LM386 Mini-Amplifier

In the world of DIY audio, are the gold standard. They don’t buffer, they don’t have pop-up ads, and you can print them out to tape above your workbench.

Many old Elektor issues have been scanned as PDFs. Search for "Elektor audio amplifier project pdf" on archive.org. Their 1980s "Discotheque Amplifier" series is legendary.