Warm sounding power cord for for CD player to suppress digital glare on vocals.

" I listen to older CDs (and the Bealtes) and there is definitely some glare in vocals on many of these recordings "

...:Powercord??
Is that too much of a whole bunch to ask just from powercord? 
How powercord even $$$$ can fix THAT?
I've just imagined anyone casual reading that LOL.

For older CDs all you need is tube buffer such as Musical Fidelity that will cost substantially lower than so mentioned powercord.

Any pc from Cardas.

Get the  Furman AC-215.

BTW: try bass boost according to the JBL curve. It will make everything sound fuller and better.

Thanks Rgs. With that budget, I would recommend a 1.5 mtr Jorma Unity pc. Unity is on the warm side & like other Jorma cables, sounds natural and harmonically rich which is a good match with a cd player like Emm Labs. The Cable Co list the cable at $2225.00. Here is a link to further info:

http://www.jormadesign.com/products/unitypower.htm
http://www.thecableco.com/Product/Unity-Power

I feel your pain.  Sadly my solution is I've stopped listening to poorly mastered CDs and have found enough well recorded music that I can live with it.  Anything I did to make inferior recordings sound better had negative consequences on better recordings that I couldn't accept.  If I listened to a lot of older red book CDs I'd seriously consider switching to vinyl.  Best of luck.