I have heard back from Naim. In short, and as I suspected, it’s just a temporary measure while Naim work on getting DR capacitor supplies back on track.
From Naim’s Tech support department:
At present, this is a temporary parts availability issue, specifically relating to capacitors required during routine servicing of certain DR products. It is not a decision to end support for DR products, nor does it mean that DR-equipped units have become unserviceable.
The current guidance from Naim is that routine servicing of affected DR products is temporarily paused whilst awaiting delivery of the required components. Supply Chain is actively working to resolve the shortage, and an update is expected once parts availability becomes clearer.
For NAP 500 DR owners specifically, it’s worth noting that the head unit has long been treated differently from other products due to its construction. The NAP 500 DR head unit is not routinely serviced and instead receives targeted repairs if required. The separate power supply remains serviceable and should continue to be maintained according to the recommended service interval.
Importantly, there has been no announcement that servicing of DR products has been permanently discontinued. The current pause relates to component availability only. While it’s understandable that owners may be concerned, particularly given wider industry supply chain challenges and the discontinuation of some legacy products, there is currently no indication that Naim intends to abandon support for DR technology.
As always, if a unit develops a fault, targeted repair options remain available where applicable. For routine servicing requests, dealers and customers are advised to check back once further information on parts availability has been communicated.
We appreciate everyone’s patience while this temporary supply issue is resolved.