A new NDX2 will need running in and be properly warmed up. When I bought mine I left internet radio on overnight for a few days which speeds up the process. I also have an XPSDR and didnt sound harsh to me even from the start. Check your cable connections maybe? Others who are more knowledgeable may have suggestions. Enjoy the music!
In my experience the NDX 2 should not sound harsh and thin when connected to XPS DR. The uplift in my system was immediately apparent both to me and my partner in crime. As others have said it may be a cabling issue. Good luck - I hope you get it sorted. I would not want to be without the PS.
It’s probably due to the Burndy connection. I would switch off the XPS , wait 15 minutes, then disconnect the burndy, and de-stress the burndy. It has to be free flowing like a snake, not touching the floor, rack and power cables.
And see also if you have connected in the right direction.
As FR says above, getting the Burndy dressing right is critical.
Check the Burndy for how it’s dressed and whether it’s nicely “relaxed”. It’s easy to get wrong and the sound then gets hardened at the top end and lacks air and “breath”.
Take each connector of the cable in each hand with the cable looped between in front of you. gently twist the connectors with a wrist movement while gently swinging the cable. You may wish to do this alone, as you may get some odd looks…
Also check to see that the strain relief on the connectors is not done too tight or too loose. There should be a small amount of movement but not too loose.
When you connect the two ends make sure the cable is nice and relaxed as per the above and that you have “formed” it so the plugs slide in perfectly without having to put any torsional stress on any of it.
Got to honest… was never that impressed with the xps dr…the bass was never there, even to the point I was gonna change my speakers as I thought that must be the weak point.
A hi line made a difference, (300 SH) and a EE switch…
I know it’s a massive expense… but I got a 555ps and the difference was staggering… (basically it did what I expected the xps to do!)
Don’t get me wrong I know it’s a lot of money but a xps dr PX with a SH 555dr ps is so worth the money…