Voltage Cap?

[sergio]

Since I haven't found cap with exat value , if I use a voltage more high that required is a problem?

Example: 10uF 50V instead of 10uF 25V
4,7uF 100V instead of 5uF 25V

Thanks

[greiswig]

For electrolytic capacitors like you describe, that is fine and in many ways somewhat preferable. The only place where I have noticed a clear difference is between a 1,000V ceramic cap and a 50V ceramic cap of the same value (47 picofarads) in the bright switch on my amp. So I think it might make a difference for some capacitors that are passing audio signal, but not for the most part.