Unusual amp from 1987

Will try.
As for a diode at CCS: I've never seen yet a non-electrolytic capacitor to get damaged/shorted. Doesn't happen often I guess?
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Попытаюсь. Что касается диода в CCS: я еще никогда не видел, чтобы неэлектролитический конденсатор был поврежден / закорочен. Думаю, нечасто случается?
 
D3

I have always felt the only reason for using D3 is to cross couple the drivers. This seems to provide half the THD with < 30mA bias. Your thoughts?
 

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The Baxandal diode provides better symmetry of the quasi-complementary stage.
Simulates a P-N transition.
JLH used an additional 100 ohm shunt resistor and a 10-20nf capacitor.
Shaw used a powerful diode in the collector of the output transistor. Very effective on small signal without GNFB.
Pashinin used a diode-connected transistor.
 
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>It is better to make a three-stage output stage.
It's better to be rich, healthy and pretty, rather than poor, sick and ugly 🙂
Haven't seen quasi amp with output triple yet
Definitely not needed with 2N3055 transistors 🙂

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Лучше быть богатым, здоровым и красивым, чем бедным, больным и некрасивым 🙂 Еще не видел квазиусилителя с тройным выходом Однозначно не нужен с транзисторами 2N3055 🙂
 
>Is there a preamp with timbre adjustment in the plans ?

No, I'm playing all the music from a PC (flac and DSD files)
with DAC between PC and the power amp.
All different effects, equalizer, etc... runs on PC, no need for hardware.
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Нет, я проигрываю всю музыку с ПК (файлы flac и DSD) с ЦАП между ПК и усилителем мощности. Все эффекты, эквалайзер и т. Д. Работают на ПК, оборудование не требуется.