How to replace hardwired stock power cord ?

Soldering: Yes. Just follow the existing cord, to it’s connection points. If there’s a star ground, the new cord’s ground conductor to that(perhaps you’ll need an eyelet/ring terminal). If not, try a point on the chassis. If that creates a ground loop, just forget about(cut off) the cord’s ground conductor(you didn’t have one prior, anyway). Same ground rules apply, for an IEC connector, if you choose to pursue that course(per Erik's recommendation). If you can solder/desolder competently at all; capacitors shouldn’t be a problem, providing access to your PC board bottoms is possible/easy. Be adventurous, but- practice first! Tiny alligator clips make great heatsinks and eutectic alloy solders are pleasure/easy to use, if you decide to go there. btw: Elnas for signal path / OS-CONs for power supply

Get your IEC socket first so you know what size you need, then use this:
https://amzn.to/31xVP2v
It will take a lot of work and patience. Though honestly, you'll have better results if you forego using detachable cords and replace with a high quality shielded cable like this:

https://www.partsconnexion.com/DHLABS-75520.html
Check the diameter to make sure it will fit. You may need to ream the original hole. Make sure to get the right grommet so you don't have the cabling touching bare metal.

Best,
Erik

I should have mentioned; observe where the existing cord's, "hot"(narrow) and, "neutral"(wider prong) conductors are connected, just to cover the bases.  

Erik - you said better results if I forego using detachable cords and replace with a high quality shielded cable......while practically everyone else says to get high quality detachable power cords. 

However I must agree that the cable you suggested - indeed a high quality and well shielded cable if installed well - should make a very good well shielded high quality and very affordable power cable.  This would eliminate the need for the IEC connector and works on the chassis right ? All I need a good mains plug - my job is done right ? - at least pertaining to the power cord section? 

When you have time - do have a look at this link - suggest the mains plug.   https://www.futureshop.co.uk/furutech-fi-1363-n1-l-shape-angled-uk-mains-plug-copper


rodman99999 - points well noted. thank you!

Erik - I found two options at site..... https://www.partsconnexion.com/dh-labs-bulk-ac-power-cable.html

12 & 14 AWG cable.....if I can open up my player - and get it connected direct - all I need is then just a suitable power mains plug. 

Please do recommend a suitable power mains plug - please.

Thanks