I’ve just noticed a low level intermittent cracking and rustling sound out of the right channel when no music playing, I’ve disconnected all sources etc but still there. Perhaps a capacitor on the way out? Anyone come across this?
Or a poor connection somewhere?
Try removing an re-fitting the link plug a few times (do this with the amp powered off).
Otherwise @NeilS may have a better idea here.
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No joy with that unfortunately
Crackling on Nap 250 was usually a sign a recap was needed.
What is the age of the SN3 - when was it last serviced…?
Surely can’t be more than 4 years old? Shouldn’t need a service any time soon I would have thought?
It’ll be due a service in or around 2032! They’ve only been available since 2019
Sorry I asked… 
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Just caused me to age as a Supernait 3 owner, thought I’d missed a newsflash 
Well it’s the fourth fault I’ve had with a SN3, it’s already been back to Naim with different issues and a previous faulty unit was replaced so not a great experience at all. Not sure I want it outside of warranty.
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Wow, that’s poor and not what you expect with a now 4K amp.
My dealer sorted me a new one to replace first one with the uncentered balance control.
I would say the most likely cause of this is a faulty transistor in the preamp gain stage - especially if you can still hear it with the volume at zero.
Regards
Neil.
Thanks Neil, yes it’s there with volume at zero unfortunately