I have a question about +/- power supplies for audio devices.
Is there a qualitative, sonic or audible difference between +/- power supplies that consist of a positive and a negative voltage regulator (regardless of whether 317/337 or +/- Superreg), or where the +/- supply consists of 2 positive voltage regulators?
It is clear to me that with a +/- supply from 2 positive voltage regulators, 2 separate taps must be available on the transformer and 2 rectifiers are required.
Is there a qualitative, sonic or audible difference between +/- power supplies that consist of a positive and a negative voltage regulator (regardless of whether 317/337 or +/- Superreg), or where the +/- supply consists of 2 positive voltage regulators?
It is clear to me that with a +/- supply from 2 positive voltage regulators, 2 separate taps must be available on the transformer and 2 rectifiers are required.
Right.
Along this line, you can use two transformers for excellent secondary windings separation.
Furthermore, because you aim at ultimate quality, use transformers with an electrostatic shield ( this shield is between primary and secondary , it is to be grounded ). Then you do have ultimate separation.
This shield, a must in high end gear is a minor extra cost, well worth it.
Yes, therefore my question.
Does the use of 2 positive voltage regulators for a +/- supply have an adverse effect on the sound.
@Mchambin
I agree with you, but I pack my small transformers next to my devices in a grounded MU metal housing.
I think cascading two positive regulated PSU is a free lunch.
Instead of complementary pos/neg which is purely cosmetic looking at schematics.
Furthermore I recommend positive regulated psu based on "TL431+ Pass transistor" ( An extremely versatile topology that cover most needs ).
Instead of complementary pos/neg which is purely cosmetic looking at schematics.
Furthermore I recommend positive regulated psu based on "TL431+ Pass transistor" ( An extremely versatile topology that cover most needs ).