Hi, I have simulated this circuit (preamp+poweramp). It works, but I have an Offset voltage on the output, does anybody know why?
And how big can be the input-voltage(rms) of the preamp (for example connected with a phone)?
As it's only simulation, you likely have a connection error of wiring which is not easy to see. Multisim has a weakness of being unclear about crossing wires that actually connect or not. Check Q2,Q3 bases to D1 junction for example.
