Not just the 3m or longer speaker cable that should be the Naim cable (or apparently Linn is ok) and leaving powered all day and night, servicing, there is more.
The various boxes have to be in a certain order on a particular rack (Naim make one of course) and have particular mains cable to connect to the house ring main - no wait, should be connected to a dedicated spur from an independent mains fuse block (which should be a certain make - no not made by Naim).
I have properly missed something vital to the sound. Well of course, one is invited onto the upgrade path if you start at the bottom - add a separate power supply, change the pre-amp, change the power amp, add different interconnects - the "Full Loom" - better speaker cables. Missed anything. No - I have a "Naim Statement"
The Naim forum is where this information and plenty of guidance and opinion is available.
Now here is the disclosure.
I bought into a Naim amplifier (pre and power boxes, not the integrated amp), and I added a separate power supply in the 1980's.
I have the same boxes today, and just a few years ago I had them serviced, which cost more than the 1980's purchase price.
I never stepped onto the "upgrade ladder" and I simply used the "HiFi" for music, and the tv via one of the inputs.
Now I think I should switch off, pack the boxes into the original packing, and set aside for my descendents to enjoy when I am dead, which is sooner rather than later in the scale of three score years and ten. That way my sons will have Naim amps that will not need expensive (extravagant) servicing, and not require huge buy in costs to Naim amplification (feeding the coffers of hedge funds, who run a lot now, but soon will run everything).
In the meantime I can find a small efficient but powerful amplifier to use instead of the Naim to feed the tv (and a cheap record and cd player for the occasional use of a record or cd). My wife says I am deaf anyway.
The additional problem is I have two Leak Stereo 70 amplifiers, one dead on one channel, and the other intermittently working, that I want to get repaired to full working. I have swapped out the electrolytic caps on the power supply where they were bulging and bubbling (swapping large components - no surface mount) is something I can do, and I still have a stock of lead solder to suit the 1970's electronics.
Offers of help with the Leak amps very welcome please.
Sorry for the long entry here.