In a pre-amplifier, I am replacing all relevant capacitors in signal lines by 100V or 250V polypropylene film capacitors (i.e. big yellow ones). These are much better for audio than standard alu elcos.
My question is:
1) the signal is only a couple of volts in amplitude. Is it bad that the capacitors are way beyond this value? I mean, could it be that these big caps handle low voltages not as well?2) is it actually a good idea to replace *all* of these capacitors by these big ones? (if you'd like, look at the circuit at ) Or would some good, small tantalum capacitors do better in some locations?