# 2x555DR vs. 1x555DR on a ND555 **URL:** \ **Category:** Streaming Audio\ **Created:** [October 9, 2019, 12:33am UTC](https://community.naimaudio.com/t/2x555dr-vs-1x555dr-on-a-nd555/4450 "2019-10-09T00:33:09Z")\ **Posts on this page:** 1\ **Showing post:** 407
**Author:** ![Thomas](https://community.naimaudio.com/user_avatar/community.naimaudio.com/thomas/32/319_2.png) [@Thomas](https://community.naimaudio.com/u/Thomas)\ **Post date:** [October 8, 2020, 3:19pm UTC](https://community.naimaudio.com/t/2x555dr-vs-1x555dr-on-a-nd555/4450/407 "2020-10-08T15:19:29Z")
There is a rather curious thing about audio: we rapidly get used to the sound we have, whether it is iPhone earbuds or a Magico/Naim 500 system. I’m not a “try this, try that” guy (don’t have time for that). But I was curious to hear, once again, the ND555 with one PS only. Disconnecting the second PS is pretty straightforward. I won’t say anything about how I feel about one PS only for the ND555… What I can say is that the experiment didn’t last more than 3 tracks… In my opinion, t **he ND555 + 2x555 PS is really something** , and worth every penny! --- _[View the full topic](https://community.naimaudio.com/t/2x555dr-vs-1x555dr-on-a-nd555/4450)._