More info on this amplifier?

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I came across this schematics on the web and it looks preatty simpleto build(no adjustment of any kind) but i hope that there is someone who has more data on this amplifier.


Thanks in advance!
 

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It has the same style as the schematics from Siemens data and application books from the 70's and the 80's. One thing for sure: This is a class B amp :down: but can easily be converted to class AB :up:

Just add two more diodes or replace the D2, D3 with a Vbe multiplier and put the transistors on the heatsink.

The gain is 48 and a little bit high for my taste. 20-30 is more normal.
 
Thanks Peranders !
You are answered most of my questions (even some I was going to ask later) but there is just only one question regarding dioes that you mentioned in your reply.Could you please point on the schematics where I should add these two diodes because my knowledge of that part of electronics is very limited .
Thanks!
 
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