So ... About my 93 Ohm cable experience ...
Let me describe it like this :
the most bad-ass sound I ever experienced. And I don't think I was drugged.
I could start shouting like we often do, but I'll just keep it "quiet" with the above expression. Okay, I just made it bold.
Also : If I now see what a HUGE differences this all makes, then there must be a year ahead of us in improving by these means. But never mind that for now.
Haha, and now you still don't know the verdict eh ? Well, let me try to put it like this :
This has been the very first time for me that I felt in a great hurry. So just imagine : I put up some album, and into the second track of it I *had* to go to a next album. And a next. And so on, for the whole of the 4 hours or so. This - and this seems crucial - while I was DYING to listen to the remainder of each album. But all I did was hopping to the next to explore that, each time thinking : oh boy, what a super nice surprises will be waiting for me the next days and weeks.
Now you know my verdict.
What I did first was playing the last two tracks of the day before. Very first notice : oops, so clear ??
Then, again a strange thing I did : after 30 seconds I went out of the room, thinking that I'd better let run-in the lot for 20 minutes (this seems to be necessary with the NOS1(a).
When I came back, the last minute of that second track played, and all I thought was : did I play this yesterday ?
At the next album I tried to focus on that clearness, but I did not succeed much on that. In aftermath I merely thought : that clearness was not clearness as such, but
stability. So, how a guitar string can sound super straight (when no vibrato is applied). A bit of a strange effect ...
But the whole bad-ass effect emerged from other albums and this was much more of a surprise;
Because I wanted to check the highs, I put on the most "square" music I can think of - Phutureprimitive (no, you won't like that, but it's super for "test signals"). Now, of course hard to explain, as usual, but all what's normally super pinpointed and sharp (and dangerous for good sound) turned into sheer roar and fundament and, well, BAD-ASS. The whole idea of such an album changes with it. It's like that originally it was made for a refined bringing across some luminous landscape whatever, while now it was putting the message to you the rough way. Tell the message in 1 minute instead of 60. Next, have digested that message and listen for the remainder of 59 minutes to the story about the message.
Okay, I'm nuts. But say (and I only think of this now, really) that I saved the story for tomorrow and next week, just because the subject seems so attractive. Quickly read on to the next summarisation of the next story. Not more.
Later I thought that this was by far the very best balance I ever received. It also was the first time that all was full of bass while no bass was too loud or overwhelming. I thought of double Windows 7 with quadruple Windows 8 sauce. All so well defined. Deep down earth included, but now only when deep down earth was in the story.
I forgot the album/track, but a first track of some album I play regurlarly, suddenly started out with sub-low roar I never heard before. At first I thought of a thunder-blast outside.
That kind of thing.
How ?
Of course I don't know. But I do know that I liked the 93 Ohm from the start - just for theories. So things like capacitance are way better and IIRC propagation speed the same.
But before you now all start to obtain 93 Ohm cables (RG62) ... there's quite some mistery around. Well, in my particular case;
First off, you won't be able to buy assembled cables for 93 Ohm. Nah, not true, but these things are so rare (these days) that possibly you won't be able to get "your length".
Next is, the RG62 is spec'd again with steel. Or at least that's what I ran into. But now mine ...
I can't be 100% sure, but with the bare eye it looks like copper throughout, and looking with a microscope doesn't change my mind really. However, hard to see because when you cut the core it will "squeeze" and the top will fold over the core itself (I hope you understand). Still, I hoped for it to begin with, because this is cable from the old days and possibly copper wasn't regarded so expensive and they just put it in. Also, the cable has no other purpose than communications and it could be the best ? Mind you, this WAS so, today not any more. OK, never mind.
The core is .63mm and the copper braid is "visually 100%" (this "visually" I see some times as official spec). One shield only.
The insulation is so stiff around the braid that it really needs skill to pull it off. Btw, this will not be the best for propagation speed.
The connectors should be official 93 Ohm, but I can't check that (anymore). This is btw the same with the cable; all stuff is written on it (including MIL spec blah), but only one single reference by Google, and the forum post concerned (2003) was about wireless. Yes, out of all.
Then, I had to use the 50 Ohm to-RCA adapters. Of course there's nothing available for 93 Ohm. But as "reasoned" in my previous post ... maybe harmless ? It should, or otherwise what's behind the connection (behinnd binding post in the device) is as harmful.
What explicitly came to my mind yesterday is that this sounds like warm piss. Yes, sorry for the expression, but I once in a time I adopted that for sound which is so fluent that it is easy to hear that nothing holds back. My thinking went even as far as envisioning some "accelerator" implied by the 90 Ohm to 50 Ohm boundary. Wishful thinking perhaps, and at this moment a bit beyond me, but I really wondered WHAT actually could imply all this current flowing. Notice though that at making passive current to voltage converters (I/V in DAC terms) the I/V resistor better be at the amp's end than at the source end. That too creates "current through the cable". Maybe this coincidentally does similar, with the 93 Ohm - 50 Ohm relation.
Notice that this happens at two ends (DAC and amp), so I really don't know ...
I made this cable 3.5 meters, and the 3m stranded 50 Ohm sounds like a fragile baby in comparison. And that in a situation of not one week ago when I called that the best balance ever. But baby balance is different from bad-ass balance.
Maybe this all goes too fast ?