@Igel I can’t thank you enough, for mentioning that the phase side on the end of a powercord should be on the right side. I feel kinda stupid thinking it was the other way round all these years, and therefor having several amps connected wrong. It may be bollocks for the (probably many) non-beleivers, and tbh I can’t blame ‘em, but I just spent about an hour listening to some favorite albums/songs and my system has never sounded this good.
With all the tracks I listened to, it’s the same result: voices and instruments are definitiely better focussed within the soundstage.
That’s indeed a good idea, Chris. Will do. (not tonight, but I’ll try, just out of curiosity)
The Live, Neutral and Earth are labelled on the connector of the power cord Naim supply in the Netherlands with the NC equipment. It confirms that the right connection is Live,
I have to confess it wasn’t until yesterday, that I never knew what the N + L stoof for!
(not knowing that L meant ‘live’, what I knew as ‘phase’ (or fase as we call it)
Please do not rely on just a phase pen to swap any behind the socket wiring, particularly on older installations, and never on a 3 phase installation, as is still common in rural areas in Europe. Always get an electrician to check the complete installation. Always.
Why swap N and L in the socket? You just turn the schuko 180 degrees and make sure L is lit up with a phase pen on the IEC that goes into the electronics.
This. So important for best performance in Continental Europe.
The leads can often be connected either way round inside at the wall plug end so you need to check with an induction pen and ensure that L and N actually do correspond to the same and correct pins at the IEC end.
I just did a few tests this morning. Once again I connected my Nait 50 to the extension mainsblock I had lying around, with about a 10meter powercord, connected to the grounded wallsocket in my kitchen. (this time checking the powercord of the N50 was plugged in right!) Then, after the N50 was warmed up for about an hour, I played some familiar tracks. After that I disconnected the Nait and plugged it into the Naim/Musicline mainsblock I’m using for the last 20 years or so.
Tbh,…I found it hard to notice a difference. What I did found a bit surprising was… on my Rega IO the impact of connecting the powercord the right way, was much more noticable.
(perhaps because I recently got an Isotek Evo3 premier powercord for it, which already proved to be a worthy improvement. (quite the contrary on the Naim btw)
You can read minds, Gerben ? I just did… again though, hard to tell a difference.
So, I’ll just stick to the Musicline mainblock. (also because it’s neatly hidden away for 80% through a skirting board behind my system)
Had to have it installed specifically and it cured 90% of the hum on my Supernait3 and about 50% on the Superline (even though it’s on a dedicated HaCap DR)
My I ask what the costs were to have it installed ? I would need to have 3 mainsspurs/sockets replaced from ungrounded to grounded in my livingroom. (eventhough 2 of them would do fine ungroundend as they’re not used for my audio system)
One needs to qualify that for new structures in the U.S. I’m in a 98 year old house, and not all outlets are grounded. Only the ones (many of them) that have been modernized over time.
I feel kinda stupid thinking it was the other way round all these years, and therefor having several amps connected wrong. It may be bollocks for the (probably many) non-beleivers, and tbh I can’t blame ‘em, but I just spent about an hour listening to some favorite albums/songs and my system has never sounded this good. 
What I did found a bit surprising was… on my Rega IO the impact of connecting the powercord the right way, was much more noticable.
I just did… again though, hard to tell a difference.