Ok, guys, I've been holding out on about six months worth of trial impressions from Dave's cables. It's time for a big brain-dump. Hold on tight.
Current setup: Mac Mini - Lampizator level 5 - TRL Dude preamp - Job 225 amp - Tekton Lore speakers (with dual distributed subs with active EQ to create a pretty even and fullrange in-room bass response) - full front wall of absorption, diffusion at first reflections
Alright, I gave my impressions way back last fall at hearing the DD and D2 interconnects. I can't remember if I also commented on the D3's in comparison. Upshot is that back then, I liked the DD's better than the D3's in my system. The DD's were full bodied, nearly as detailed as the D3's, and just had the right overall tonality. In comparison, D3's were more detailed and nuanced, but just sounded thinner and not as full bodied, and didn't have the "magic" that contributed to greater overall realism in my system.
Then came January and I upgraded DACs from the Tranquility SE to the Lampizator. I had a hunch it was worth hearing the D3's again, even though the DD's were sounding great. I got a couple trial pair of D3's about a month ago and played around with a bunch of different combinations. What I ended up with were D3's from DAC to preamp, and DD from preamp to amp. I got more spatial definition and soundstage by a large margin, but kept the richness of tone/body that I liked about the DD.
Then I finally splurged for the Audio Magic super fuse for the Job amp. Holy crap, that amp changed character quite a bit from being relatively lean (although wonderfully fast and articulate) to being very richly toneful. Suddenly, the full loom of D3's didn't shift the tone too lean or high for me, and the full loom of D3 had a very slight edge in detail without losing magic (although just very slightly).
Ok, now last week I got the trial pair of D4's. Put the in place of the D3's between DAC and preamp (I have always found this position to be more sensitive to cable changes than from preamp to amp). Holy shit!!!!
And now I am
I haven't had them out of the system since I put them in. I had intended to AB and play around with various combinations. Sorry guys, these things are absolute winners. I don't care that they cost a fortune. I can only characterize what I'm hearing as a significant qualitative change. What I mean by that is to distinguish it from a quantitative change. A quantitative change is more of this or that. More imaging, spatial cues, whatever. More high frequencies. Better bass or PRAT. Better, more, less, of whatever audiophile characteristic you want to mention.
In those senses, I don't find the D4 to be revolutionary, more evolutionary from the D3. There IS better instrument separation, to a degree, but just a good solid step forward. Pretty much the same tone. Dave had been suggesting it would be ruthless, and I was worried about it being brighter than the D3. I have notice no such thing in my system.
But there's something completely new that I am hearing - the "qualitative" change. I have never heard this kind of realism before in my system, and I really can't remember having heard it in any other system either. It's definitely still within the realm of what cable changes can provide, so keep that in mind. It's not going to fundamentally transform any system. However, there are "layers" gone between system and listener that truly change the listening experience itself. Like TOTALLY connecting with the musician/artist. There's a humanity to vocals that transcends the performance. Not just additional details, but details in the right context to have exceptional PRAT and so forth.
Ok, all that sounds totally jumbled and incoherent to me as I write it and as I try to conjure words for the emotional/aesthetic experience of the change. Suffice it to say that things amped up a LOT in terms of my emotional engagement with the music. This is much more than the previous differences between D2 to DD to D3. In an engineering sense, I'm sure it's easily explanable as a lower noise floor or something, but all I'm saying is that at this level of my system performance, taking this kind of an emotional leap of greater connection to the music was totally unexpected. I honestly thought I was further down the line of diminishing returns than that.
I have ordered two pairs. No hesitation. I sent the DD's back after the tour visit last fall. It took me several weeks to finally give in and order two pair of those. I'm not making that mistake again. The D4's are the real deal, and if you can afford them, and if your system is clean and high end enough, I can't recommend them enough.
But make sure your system is up to the task. I don't think these D4's would have been the right ticket at all with the Tranquility SE still in the chain. I think the DD's were just right for that DAC in my system with my speakers and their characteristics. So, the usual caveats apply, YMMV, etc...
Rock on, Dave!!!