Okay,I see
I know it - someone must bite…
Matchball for you 
Yes I did … my beloved SBL … still in the room.
You know the story that came afterwards … 5xx… 5xx… 5xx… 
Yes I miss the SBL sometimes, but the 606 is soo good in resolution, 3d soundstage and bass. I think I will be disappointed when I switch back.
But will not do - too risky 
SBL (brighter tonality) with Olive is a perfect match
So is:
606 (more neutral) with 500 series…
The sound is actually very similar to SBL now - if I can even remember. The sigma cable brought this feeling back
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As there is you network also part of the game it should be difficult to tell, if the Naim app was the source.
When it is stuck, it could be a short connection issue at the worst moment ever.
I have used system automation for a minute and was too anxious that I will misstap some day. And I love to feel of a remote
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I suppose the issue here is whether it’s an App fault/feature, or an Operating system fault. If it’s an OS fault, then thinking back to all those Blue Screen Of Death issues that lost you your working data, then MSoft would have been sued by everyone
Thanks Richard 
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I’m definitely keeping an eye on this thread as I use system automation. Due to wildly different recording volumes I often have to alter the volume mid playlist as some older songs are barely audible at normal volume.
It’s not impossible for a customer to sue a manufacturer but it would be far less straightforward and shouldn’t be necessary. Manufacturers such as Naim don’t sell to the consumer market. Consumer law places the responsibility for consumer products at the door of the retailer.
I used Steve at Wilmslow Audio to service and upgrade my wife’s Keilidh’s. 
Lovely chap and superb service. The new Scanspeak Tweeters are excellent and these 30 year old speakers sound wonderful again.
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This discussion has me seriously considering removing the automation cable from both my amps🫣
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Figuring out the root cause without a safe way to “reliably” reproduce the issue is a fool’s errand. There are multiple factors here.
- The app
- The phone
- The network (could be as simple as delayed ACK resulting on auto packet resend)
- The streamer
- The preamp
As a result, attributing blame reliably to any one area is not feasible.
Best that can be done is move on with repair or replacement unfortunately.
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To be fair it only seems that it’s me and HiFiman that has encountered this problem so not a particularly prevelant issue. This thread just reminded me of it and the panic as I ran across the room (twice)!
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With regard to the comments about setting a “safe” maximum volume setting, is this available within the Naim app or system automation, or were these comments referring solely to a Spotify app?
Thanks for any clarification!
Yes, I do understand that it is a very small sample size. However, it does make me a little nervous and I have two perfectly good and readily available remote controls, so it wouldn’t create any significant hardship to disconnect the automation wire. Just to be extra safe
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Yes I see your point. Unlikely to happen but potentially significant consequences if it did!
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Always unfortunate and not a happy event, so bw to op. I repeatedly blew one channel of sbl treble, despite service, changes of electronics. Who knew why?
Agree f_z excellent post, just an additional comment.
Age, screen wear, battery condition for control point are also in the mix. Plus for electronics service history may play a part.
Using a phone as a control point, unless using a pointer, it is something of an ask to activate functions regardless of finger size. I use phone only for Musos otherwise a remote.
If it the frossover, I guess only one part have died. A repair shop will fix it
Indeed I believe you are correct re retailer, certainly in terms of fitness for purpose, though I seem to recall in certain circumstances it can be passed back to manufacturer. Negligence in allowing a known fault to continue to exist will probably depend on spe ific detaiks.
Out of curiosity, I tried double-tapping the - and + in the Naim app (while streaming from my NDS just in case that matters). Of course, I did this while within reach of the physical volume control on my NAC252. Just in case.
The result was no different than single-tapping.
So AFAICT, there is no double-tap feature to steadily change the volume until tapped again (thankfully).
Just to be clear, this is not to discount other failure modes that have been described in this thread. I was only interested in empirically determining whether or not there is a Naim App double-tap volume feature.
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I imagine that in cases where a product has caused serious injury or death for example, due to a design fault let’s say, then that would indeed go beyond the remit of consumer law and would dictate legal action against the manufacturer. Also against the retailer of course.
I was more wondering if it goes beyond consumer law when a manufacturer negligently does not fix a fault brought to their attention, with resultant damage to property, but as I said, a lawyer specialising in tort would be able to advise. If the speakers can be fixed for just a few £hundred then probably not worth considering, but perhaps different if replacement is necessary at maybe £5-£10k depending on what is truly a current equivalent.