Do CD Transports benefit much from upgraded power cords?

A well appointed beautiful system like yours can definitely benefit from an upgraded power cord. That’s a very nice CD player, try something like Zavfino FINA OCC PC (14AWG) MKII and report back your findings.

Yes, they do....generally speaking, of course.

I have used many CD players of varying quality over the years.

IN GENERAL, the nicer the CD player, the better the unit responds to a nicer cord.

If you are using a cheapie CD player (say....under $1k), you probably won’t hear a difference.

When you start talking about $2K+ players with quality power supply(-ies), then yes, you can hear a difference. I don’t think you need to go overboard with the quality of the cord, but a couple-of-hundred dollar cord on a good CD player will be noticeable.

(It’s easily demonstrable with my Esoteric, Yamaha, Classe, modified Denon tube CD player, etc...)

Everything makes a difference on audiophile equipment, and CD players are no different.

P.S. Nice setup. Love the speakers!