Voltage Differential Amplification

[Stee]

Bias adjust

this output stage can govern alone fixed biasing

and NFB can govern alone DC offset

need a big dissipator

please measure DC output on power resistor before connect loudspeaker

be careful :
--> this circuit do NOT have protection in RF / DC / Thermal <--

 

[Jenyok]

I am looking for descrete op amp on germanium transistors.
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