Hello Dear Naim Community;
I am considering for a long time upgrading my Naim NDX2 streamer with a Naim power supply. My system is;
Naim NDX2, Supernait 3, Rega P8, Focal Kanta No2, SuperNova power cables both for Sn3 and Ndx2, Chord Epic X Speaker Cables, Chord PowerHaus P6.
I don’t have any room acoustic treatment.
Any suggestions, experiences will be more than welcome.
Hi and welcome,
Both the XPS and 555 PSUs are a real improvement, the 555 really does take it into a different league.
+1 for what Lindsay says. The 555 really elevates the performance of the NDX 2. Welcome to the forum!
I had a xpsdr initially. Then got a great price on a cd555psu. Sold the xpsdr. Cost to change was relatively low. The impact was not. Genuinely took the ndx2 to a much better place.
Added a 555DR to my NDX2 just before Christmas and zero regrets. It adds more texture and space to what you’re hearing. It’ll pay dividends if you were to upgrade your amp in the future as well
Can the 555 Dr power BOTH the NDX2 and the SN3 at the same time)
Hi Jaybar. No, it is for a single device.
I don’t think so
555 PS is for digital sources only - cd players and streamers as well as the Naim DAC.
SN3 + HCDR & NDX 2 + XPS-DR here.
XPS-DR is 100% worth it, IMO. Though I did obtain mine for a song and dance (deeply motivated seller). However, I’m planning on eventually moving to a PS 555 DR for the NDX 2.
Interesting topic, did anybody compare the XPS-DR, 555 DR and the latest NPX300? How much would you get from each power supply?
The 555ps was a game changer. Biggest shift in my system followed by 282 to 552; I literally cried when I heard the impact it had…
I have a CD555 on demo. Stupidly I plugged the 555PS into the NDX2. I’m sorry to say. It outclasses the CD555. The NDX2/XPS2 DR combination was close with the CD555. The NDX2/555PS is ahead.
I added a XPS DR to my NDX 2 back when I had my SN 2 and found it to be a lovely upgrade. If you can find one at the right price I would recommend make the purchase.
Others have mentioned the 555 and I am sure that would be a positive upgrade as well. With me here in the US it was cost and I was quite happy with the XPS DR since the 555 was outside of my budget.
Good luck with your decision.
XPS DR is all you need. It works very well with NDX 2. Same as HiCap DR with SN2/3 
I have been pondering this question and trying to avoid thinking about adding another box! I can see a broad range of prices for the CD555 PS on line. I’d struggle to know how much to pay, if anyone has views…
Got mine for <£4k only 4 years old with 500 finish. Be prepared to fork out another £150 or so for the relevant burndy. I took my time for the right one to come up. I think I got quite lucky given some of the price to age ratios on the bay currently. Hope that helps.
Thanks.
£2.5k for my 2014 DR version. Had to buy a burndy and chose to get it serviced for an additional £500. So for £3200 i have effectively got a new 555psu. Sold the xpsdr for decent money too.
Thank you!