Well, ok. You want more power from previous 4P1L PSE amp? Here is an alternative approach:
You can get 5W at 2% THD maximum. I’d rather avoid filament bias at the output stage and instead apply fixed bias and a source follower driving the 4P1L stage. Best performance, lower THD at high output power. However, the above circuit is dead simple to implement without adding extra complexities!
Los Pumas dealt to the Frogs.
Well done.
tim
Hi Ale, it looks exciting! Do you mind to share with us the 2p29 spice model? Many thanks!