Power supply improvement for CD player

If you take the steps RODMAN99999 outlined, you WILL change the output character of the circuit. Beware of spending money on "across the board" modifications of older Digital equipment. I do not wish to discourage in any way, but be mindful that the D/A conversion scheme, and analog output stage were designed with the power supply to support them in a R&D situation. substitution of power supply components that are "better" does not, as a rule, ensure a more desirable Audio quality. Brightness, edge, forwardness or an opaque quality all are possible results of power supply circuit alterations out-of-hand without trial and evaluation. This law when it comes to fine audio. Ultimately, the digital and analog circuits of you unit have the last say on quality of output. If you like the sound of your unit now and wish to enhance it, think twice about changes that will require money and component swaps on the power supply. The result might disappoint, or be unacceptably different from what you had. Apply "passive" modifications...My advice, or just get a "better" unit. Good luck, and enjoy the music.

If the power supply components are replaced with those as
outlined, and of the same values as the OEMs; the only
characteristics that will change will be a quieter/blacker
background, greater dynamics, more natural highs and
improved sound staging/imaging. I've done these mods, or
similar, to a wide variety of components, over the past 35
years. The reactions/appreciation, from my customers, were
unanimous and always enthusiastic. Virtually every piece of
equipment I've personally owned, has also undergone power
supply mods, with nothing but a more realistic presentation
as a result. I listen to way too much live music, every
week, to accept otherwise. I don't hand out advice lightly.

Why do you want to change the PS ?

Jafant. It's not that I 'want' to change the power supply-- I'm just searching for ways to "improve" the detail, nuance' perhaps lower the sound floor, provide a little more dynamics. I appreciate finding economical ways of improving sound.

Rodman your info is much appreciated. (Expertise is not obtained without time and effort and usually cost. Sounds reasonable to me. I am not technically knowledgeable and would be afraid to try doing any work myself. What level of technician is required for these changes? Where are you located?