At your risk.
Class A operation means that electrons flow trough the active device (transistor in this case) all the time.
Here are some updates.
The two 1.2Ah 12V batteries were moved to the smaller bedroom.
Signal path:
Brothers in Arms - Dire Straits on un remastered CD - SonyD-EJ758CK CD Walkman line out - Celestion Ditton 150
Great, amazing sound.
Current for both channels was measured to be 32mA, due to higher temperature in Athens.
By chance only one 12V battery was then connected and the sound was even better, more easy and smoother. Current was just 14mA for both channels.
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