I don't think I need to wait any longer with reporting with what I hear today.
But first the sequence of happenings/changes, so people can follow; topics with main numbers and sub letters were applied/active at the same time (like 1a, 1b, 1c, 1d).
1a. NOS1.
1b. My previous speakers and amps.
1c. 75 Ohm coax Interlinks with Neutrik connectors. Length 1m80.
1d. Audio PC connected to mains earth.
2. Orelino Speakers + amplifiers.
3a. Orelo MKII speakers + new amplifiers.
3b. 75 Ohm coax Interlinks with Neutrik connectors. Length ~4m.
4a. NOS1a prototype (all components new).
4b. XXHighEnd Custom Filter.
5. NOS1a production version (used DAC board from my original 4 year broken in NOS1).
6. Bass tweaks for people who think they like more bass.
7. BNC Interlinks + RCA adapters. Length = 3m.
8. Disconnected Audio PC from mains earth.
9a. Back to native ("original") Orelo MKII DSP measured settings.
9b. Back to Arc Prediction.
BINGOIf you follow the sequence, you can see how things can creap in for the worse. Or better, how the one challenges for the other while actually we should always "reset" back to base. Well, look at my list. Undoable to even think about such thing. For example, why would I go back to Arc Prediction at the stage of #5. The well broken in DAC board sounded better, so "no need to". But it's just an example because it's full of it. Also see #8, which was for the (measured) better, most probably since 4a.
Still, I dedicate the biggest POSSIBILITY for change to the BNC cable. So if I now look what NET changed, it's actually only that (but a bit depending on where I start to observe the list / my history).
I can't even begin to tell what just the audible changes of going from #8 to #9 are. It's just totally crazy. As if I have cascaded 10 DSP processors with all their own goodies for the sound (OK, I am against DSP for such means, but I hope you get what I mean).
The room is so full of sound everywhere with *nothing* I could detect for anomaly or disturbing or whatever, during a sheer 6 hours of continuous playing.
I can also tell you that these 6 hours where the most challenging, especially when we moved outside for probably the last BBQ of the year and outside we listened to the music coming from around a couple of corners at something like close to 90dB hence my normal listening level, while inside it played at 110. For hours and hours everybody could pick their favorite to play (think a 100 tracks from 100 different albums), actually focused on "musical icons", meanwhile teaching our Paul what in our opinion those icons are. So it went all over the place, and much of it was from the 60's or early 70's. All sounded as good and as balanced.
What I just tried to describe is the for me very strange phenomenon that you can play for such a long time, and with so various material, that it is actally impossible that you don't run into something with too lean bass, too sharp highs or something else wrong. But nothing-nowhere.
This is how I wrote the BINGO"; as if I suddenly found how all the pieces of the puzzle must be layed. And that after so many years.
I am convinced it is about the interlink, because what it does was audible for me right form the start (just the same as Joachim described it), but all of that suddenly popped out in ten-fold. Why ? that must be the Arc Prediction Filtering.
And so my still a bit cautious conclusion :
With Arc Prediction the transients can be called infinitely high (depending on what's in the material). I could also say : there's nothing in there that filters those transient. No-thing.
The Custom Filter though, sure filters. It's only the the time-domain is still very OK (hardly any ringing).
Now we must think further and how those transients were "killed" in the normal interlink. Killed should mean : reflections of them and which for electrical (not digital) means high frequency reflections (or reflections of high frequencies (only ??) - also good).
What I just said HAS to be so, because after the NOS1a (that pronouncing all very better/more) I *had* to make the Custom Filter because I could hear distortion (and I did not blame the NOS1a). And the Custom Filter sure helped. It also ("at the same time") tamed the sound we could perceive as too fresh perhaps. I liked it.
Now ? well, now I'd say that 12dB of high output has been added and totally nothing distorts. It's back to the "infinitely highs" as I have described longer ago with which I mean that you can hear that it can even have way more highs output, and nothing will start to distort or get nasty. You just turn up the volume of the cymbals so to speak.
And with the (BNC) interlink now not messing up the signal, all is ... well, I can't describe it anyway. All I kept on noticing over and over again was that live bands played to us from the room inside.
If this is not the best ever, then I don't know.
Peter
