I tried the Flatcap - I mean dealer demo - with my XS2. Small improvement noted. Concluded it wasn’t really worth the expenditure.
My dealer then added a pre-loved HiCap2, for comparison. (Cost was a little less than a new FC). Which, to my ears, sounded like a significant improvement. For example - in detail, bass control and image. Needless to say it’s in my system now.
A Hicap is a gateway drug to separates as it will allow you to use a better preamp as your next move, trouble is this will lead to a power amp and then the source will need upgrading, meanwhile the box count is steadily growing. All great fun if you up for it but be warned it gets addictive. Personally I’d go this route rather than a supernait.
I had the XS 2 and loved it and many folks on the forum prefer it over the SN 2. With that said I did upgrade to the SN 2 and thought it was a very nice uplift. I also ran a ND5 XS that did get upgraded to a NDX and eventionally a NDX 2.
If you can get a home demo of the SN 2 I would recommend it so your ears can guide you on the decision in your own living room. If not you may want to give a HiCap trial on your XS 2 and think you would find it a nice uplift on your XS 2 over the flatcar.
I had a SN2 and ended up going back to the XS2. XS2 has a very unique energy to the presentation. SN2 was less involving to my ears. Out of curiosity, I tried the XS2 with a flatcap and it didn’t do anything I could really hear, perhaps it cut some background noise. I stumbled upon a great deal on a HiCap (non-DR) and it does bring improvements in both clarity and weight, but I don’t think it’s required. Consider moving up the Focal line? The Electra is a great speaker.
Not sure how much the XS amp will be worth, but I’d definately look at seperates, a serviced olive or CB set will murder the little XS.
Otherwise just get a Nait 2 for the time beeing, other speakers too of course.
A bit over the top. The Nait XS is definitely an excellent amplifier - you’d need very good separates to do better. As for the Nait 2 - I’m not sure you’re being serious: it’s a lovely amplifier, but modern speakers can be very demanding.