Could i asuk some question about this Power AMP?

[l9764]

hi, glad to post here first time.

I am a student of EE department in South korea.

I read a post in here, which is

Explendid amplifier designed by Michael Bittner, our MikeB

I have a few question about that.

Circuit that I attached here, is that a actual power amp or just initial version of amp?(I assume this because the file's name is he started here)

If it's is power amp, could you give me voltage gain? I'm looking for power amp which has gain 40(or 32db) and SIMPLE..

The reason why I ask this, I have to make power amp for project of microelectronic circuits.

And conditions are

1.Accept an input signal source with a maximum input voltage if 0.5v peak.

2.Deliver a maximum of 50W to an 8 ohm speaker

3.Be powered by a standard 220v, 60Hz, AC outlet

4.discrete circuit

5.can explain the mechanism of circuit

What could i refer for my project?

If you give me any advice or information, that will be really thankful.

Thank you for reading.

Have a good day!!