JLH 1969 Explanation

[sierratds]

Hi guys, my videos showing my amplifier and tests are on a new youtube channel: "Electrônica Tiago Sierra".

Here's the plylist with the videos:
https://www.youtube.com/playlist?list=PLceAdLTPocSHFkuiKAzEND4Blkb3-oGuQ

PDF circuit diagram:
https://drive.google.com/drive/folders/1hqNqf1LpdyNb26nMPSwo5KOk3z-7M26V