# How good is the ND555?

**URL:** <https://community.naimaudio.com/t/how-good-is-the-nd555/24305>\
**Category:** Hi-Fi Corner\
**Created:** [July 17, 2022, 12:23pm UTC](https://community.naimaudio.com/t/how-good-is-the-nd555/24305 "2022-07-17T12:23:54Z")\
**Posts on this page:** 1\
**Showing post:** 47

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**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:** [July 18, 2022, 10:01pm UTC](https://community.naimaudio.com/t/how-good-is-the-nd555/24305/47 "2022-07-18T22:01:12Z")

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> [@andypandya1](#):
>
> How much difference do you get adding another 555 PS ?  
> Reluctant to do this lol cos 6 boxes is nice and neat… 7 well, that’ll just look a bit odd on the rack 😂

If you don’t want to have 7 boxes, I strongly recommend not to try a second 555PS.

Depending on what you are looking for, or what you like, adding a second power supply can make a massive difference.

I no longer have the ND555. But I did own a full 500DR series system (7 boxes) and the complete set of Super Lumina cables.

Here is my very subjective opinion regarding the addition of a second power supply :

→ [2x555DR vs. 1x555DR on a ND555 - #342 by Thomas](https://community.naimaudio.com/t/2x555dr-vs-1x555dr-on-a-nd555/4450/342)

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