You really are persistent.
First of all, let's review our previous discussion on exactly the SAME topic:
https://www.head-fi.org/threads/cay...de-dual-line-out.879025/page-90#post-14663482
Back to your last question. In my first response to our request, I have stated that "if you are referring to a single-ended only high-end DAP, we probably won't attempt this market in near future."
Based on this this assumption, when you said "I wasn't really after SE but more interested in the tube implementation", the only outcome will be a Balanced DAP with balanced NuTube circuit, so when I said "You are talking about a super N8, not a mini N8", I am referring to a DAP with TWO Nutube in it. Unfortunately, you have ignored my point that Cayin will not attempt a high-end DAP in the first place.
We introduced i5 DAP back in 2016, it was a single-ended only DAP, and that was the time when balanced earphone is not as dominated as today. We have faced a lot of challenged and negative feedback, said we were unwise (some of the wording are quite rude) to not offering balanced output when our competitors are doing that, and dealers give up the product because "customers put it down when they know it doesn't support the latest balanced output". We have been there, done that, and "we can't afford the marketing cost to convince the general public on this issue. There is no point, from business point of view, to fight against the whole Personal Audio community". The last thing we can do is to continue our effort to deliver first class single-ended output in our DAP.
Not sure if I am considered as a niche user fixated solely on your nutube implementation but obviously there is a discrepancy between what I want and what you feel comfortable laying out on market.
You do not want to take a risk pushing out device relying on what perceived to be outdated output interface but I’d say have more faith on your nutube implementation.
Cayin was the first one to introduce it and I thought it was a great success…which can be capitalized even further.
The success is when your vision meets on the same tangent of public desire, whatever that may be. I understand your point and we may not need further discussion on this.