170W NE5534-Based Power Amplifier - Part 1 [The Schematic]

I found this circuit randomly online looking for something else (as you do), and I believe it has some merit to it. In this video, I look and explain the schematic, but not build anything, as I'm still on the fence about doing it. I've done op-amp based amplifiers before, and if this video generates enough interest, I will go right through to building and testing it. I would have to go through and redraw it and standardise some of the component values. The only reason I'm on the fence about building it, is the original output transistors are around $14 AUD each.

The original schematic can be found at the following links:
https://uydudoktoru.com/dosyalar/elektronik/AmfiDevreleri/power_amplifier_170w.htm
https://arhiva.elitesecurity.org/t378776-PCB-za-pojacalo-sa-NE

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