Where is the weakest link?

I have all Transparent cables and interconnects. They are excellent. Don’t know what you are using for speakers now... but probably a good choice.

You’ll probably notice the differences most in two channel since video, at least for me, is video is really distracting, so I don’t notice subtitle changes in home theater mode.

Also, I would consider upgrading the monster cable from DAC to Processor. This might result in a bigger difference than speaker... hard to be sure until you do it.

Once that is done, look at a power distributor / conditioner and power cords.

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Then look to installing a dedicated line.

You’re running a $5500 stereo DAC into a prepro. Cables are the least of your worries. Get a good stereo preamp worthy of that DAC and run the Chord along with the front L/R pre outs from the NAD into the stereo preamp so the NAD is out of the 2-channel signal path, then you can worry about wires IMO. A good stereo preamp will absolutely stomp the NAD for 2-channel performance, so to answer your question the NAD is your weakest link relative to the rest of your system. 

What is it that you are trying to improve upon? You do not indicate what your perceived area of weakness is...what is it that you are hearing or not hearing? That may help point in the right direction. Just remember, there is nothing that is perfect. 

Focus i have is cables, i do have a cheap stereo tube preamp that i plan to insert, a schiit freya that i want to replace. I will run chord dac into a tube preamp eventually. Am testing the nad’s stereo playing expertise.  I dont like using a tube preamp in a home theatre system as no one has created a nice high end stereo tube fit that is convenient and is a true ht bypass.

great comments herein, thanks.