I am happy to say that I have just put the N5X back on sale (14th November, for shipping from 1st December). However, this is a small batch using stock from previous suppliers. Some suppliers (new and old) are having trouble fulfilling orders promptly due to CV19-related staffing/etc. This means that the next batch of N5X amplifier kits must wait for those delayed parts to come in.
The same delays are affecting some other amp kits, too. As of now, the WF-55 has a short delay waiting for transformers. It’s frustrating, but there’s not a lot I can do at the moment. I may switch to selling amp kits in timed batches in 2021. Please check here from time to time for updates.