I have tried different power conditioners over the years. I have tried Monster, Furutech and Audioquest power conditioners to name some.
They DO change the sound. They tend to lower the noise. At first, this kind of sounds better. I then tried the AV Options Super Wiremold strip. It has no conditioning, filtration, surge protectors, etc. It provides pure unadultered power. It was by far the best solution I had found.
In comparison to power conditioners, the AV Options power strip had a more energized, dynamic and vivid sound; more life like.
I then tried something out. Since I now have only two Naim components (SN2 and NDX2), I bypassed the power strip and plugged them straight into the wall. Wow! Even more life and dynamics.
The Av options power strip is the best alternative, giving about 90% of the performance of going straight to the wall. But, plugging straight into the outlet yields the best result.
Anyone else plugging straight to the wall outlet?
That’s been my experience as well, especially with amplification, with
Naim and other makes,.
NAIM equipment, at least the OC, uses toroidal transformers, which are used in scientific measuring equipment to eliminate noise at the input, plus other forms of filtering. I use no filtering except for my power board, which has eight outlets and a star earth point, which comes with spike (not surge) filtering. My system is only an XS system, and I am more than happy. No mains spur, though I could see the case for an isolation transformer if you lived in a highrise apartment with lots of computers.
Warm regards,
Mitch in Oz.
I plug all my Naim gear directly into the wall sockets. SN3, Hi Cap and CD5si.
I have built an extension block for the Rega neo and WiiM streamer.
When I moved to current home I planned location of the HiFi and had additional unswitched sockets fitted. Also buried the speaker cables in conduit under the concrete extension floor.
I also have a “zero LED” lighting exclusion zone around the electronics as I have noted such lighting affects the sound when switched on
Absolutely! On a dedicated 40 Amp circuit, but no conditioners, DC filters etc at all.
Always sounds great, so why mess with it?
Many of us with lots of Naim boxes have opted for plugging into the wall a Hydra because the star-earthing offers a common earth for all the Naim kit.
Going further typically means fitting a dedicated supply from the meter to this sockets.
Those with far fewer boxes usually just plug them into the wall, though many report that a Naim Powerline can make a significant difference to SQ.
Many others disagree with all that completely, and favour plugging an expensive distribution block of some sort into the wall, with that having sockets for each box’s power cable.
I doubt that we can get a meaningful consensus on any of this. However, it looks as if you have tried both and let your ears tell you what sounds best in your room - if only everyone did the same!
All my amps go straight into the wall too. Power conditioners suck the life out of everything Naim.
I’m interested in the OP’s discovery here and wonder if I might find any positive change with my system 
Currently my naim boxes (ndx2, 282/hicap, 300dr) are all plugged into a chord S6 along with a Rel sub (which is using a power line lite). S6 plugs into a furutec twin socket all on a dedicated circuit.
Would there be any benefit in taking any of the components out of the S6, for instance the 300DR, sub or source and plugging into the empty adjacent socket?
I would try the 300DR straight into the wall. Amps are more power hungry than other components and might benefit the most.
Can you give it a try and see what your ears think?
My guess is that common-earthing may help most. However, you listening to each option, ideally over a couple of weeks (not a 5-minute switch and switch back) will be a better guide than verbiage.
For most (almost all) mains (filtered or not) blocks that I’ve had, in the end it’s been power amps to the wall if possible, and for some of them - the external power supplies too. I do share the same experience of often plugging in the amps into a block initially and thinking it sounds kind of good only to go back directly to the wall soon after.
The one exception for me has been my current mains SOtM block which I’ve been using with everything (and amp) plugged into it previously with SN3 + SCDR (plus sources), and currently 222+250. I now have less boxes and could even do without an extension block as such but my system does sound better when it’s in place and everything plugged into it. I’ve tried with and without a few times.
A couple of other mains blocks have come close.
My 300Dr sounded much better and more “alive” direct into the wall versus being plugged into my PS Audio PP3.
My 135s are plugged into the duplex MS HD wall socket of a Belden dedicated radial.
My other Naim boxes and my Farad Super 3 are on a Grahams Hydra with upgraded fuse and Furutech plug and socket on a different dedicated radial that uses 10mm2 Lapp cable.
Very happy with that configuration.
I’ve a second system comprising CDS3, SN3 & 555ps and had to use a short and fairly hefty double extension lead as the wall socket had a light plugged in on one side. I changed the double wall socket for a triple to see if improved things being able to plug both units directly into the mains. The uplift in SQ really was a shock, probably better than getting the 555 dr’d ( I could have done in those days !! )
I broke the bank with my recent purchase, so I have yet to buy a specialized power strip. My dad is using a Supra md06-eu/SP 6 AC Outlet (S) 240 V device. Does change the sound indeed. Maybe I go for this one as well.
My experience has always been, from the old days of the Hydra and onwards, that connecting everything to a single wall socket yields greater musical coherence
I had multiple Naim boxes originally plugged into a standard ring - via the std wall sockets. This sounded good. I then made up a heavy duty star earthed mains block - with one heavy duty kimber woven umbilical to a single high quality plug and fuse. This sounded more dynamic and faster than all items separately plugged into the ring - I was skeptical - I thought it would ---- if anything degrade the sound a little…anyway this was my finding…my next step is a dedicated 40amp radial directly to a single good quality unswitched socket.
Having had full system in a Puritan 156 for a year I decided to put my 500 outside it directly to the wall again since I’ve upgraded a lot in my system since. Let’s see how it goes.
You’ll get more distortion. 
As mentioned above, having all Naim boxes into one Hydra and then a dedicated supply from the meter has won in my house whenever we have tried other options.
But…
Today, a 552 arrived to (probably) replace the 52 that feeds the 300DR. It came with a Powerline. So should we use one Hydra head for the 552’s PS (as we did with 52/SC), or should we use the Powerline to plug the 552 into a different wall socket (but the same dedicated supply as the Hydra), leaving one head unused?
Good news! Finding out costs no money and just involves plugging and unplugging things.
Bad news! That means I have no excuse for not doing the test properly, with much back-and-forth to decide.