@jjss49 Very nice comparison and interpretations!
While I don't have the experience of your comparison, I pretty much agree with your evaluation of 005. I certainly hear the relative forward sound stage, and that has always stayed consistent over many changes. The greatest depth increase was when I upgraded Coincident Statement linestage to MKII status and Amtrans dual selector switches. This is only upgrade that provided more depth, and that not dramatic increase, although easily noticeable. Based on my experience I'd believe depth could be improved on. Still don't recall, depth being any less vs Auralic Vega, LKS 004, Okto Dac8 which were all in house simultaneously.
I've never sensed a closed in sound to 005, but then I've not heard your particular comparison. Compared to same dacs above never noticed this. I can understand how relative lack of depth could be perceived as sounding closed in, although I hear fine sense of height in my system, very close to lifelike size images, voices generally at about 4' 6" H, this probably helps to provide a less closed in sound, I also use diffusers centered behind speakers so not too finely image outlines. I've found a large speaker like my Klipschorns help greatly in providing more life size images, Maggies do same. I'm also quite sure horns and the particular mods I've done to my Klipschorns (Volti mid horns and tweeters on dedicated baffle) are providing maximum openness.
I too agree that small increments of volume attenuation MAY not do harm to sound quality due to bit stripping. I constantly use 005 as fine volume control due to my Coincident having dual non remote volume selectors, not getting up and down constantly from listening chair for fine volume changes. The thing is I can never be sure on this front, generally our perceptions of sound change as volume changes, louder sounds better up to a point. I can only say splitting fine hairs here.
So, that leaves the other liability you heard vs Briscati, namely the slight digital signature of 005. This is the single aspect of 005 I've yet to come to final conclusion on. When first inserting 005 I found it pretty much dead neutral, over time and many incremental and more substantial upgrades I sometimes heard slight slides to analytical side. Finally came to end of nearly every single upgrade to system, so system static over perhaps last 75 hours or so, everything burned in and I'm adjusted to static state of system. So, over all these hours I've experienced far greater sense of analog sound previous to ANY digital I've heard previously (agree with slow filter vs fast). Still, I do hear a slightest hint of what may be digital signature coming through on certain recordings, audiophile recordings have great sense of organic, natural sound, its with the lesser recordings I hear this sense. I'd likely not notice this without comparisons provided by my present vinyl setup and aural memory of multi 100K vinyl setups, so slight but its there. The question I'm still answering is this signature due to dac or rest of streaming setup. Your comparison to Briscati forces me to assign more blame to 005 vs the streaming setup. Now, I will say, my long evolving and continuing streaming upgrades have been helping greatly in providing more analog like sound, especially adding the OpticalRendu vs SOTM SMS200Neo. LPS, best power cords on every steaming component, all going through power conditioner, FMC PRIOR to server, all these upgrades have helped greatly here. And more streaming upgrades on way, so presume even greater analog signature coming.
Still, the question remains, all things being equal, is 005 the last word in providing sense of analog like sound, the ease and sense of luxury of analog at it's best? Comparison to Briscati makes it seem not. Generally, its thought jitter responsible for the digital sound signature, it could also be something inherent to Sabre chip, or something else? I'd agree this signature very subtle with 005, almost a non-factor, even with the admittance it exists for me. As I stated previously, only hear this with lesser recordings, and still easy to hear past as the holistic system presentation is entirely life like, performers in room experience. It seems many criticize lesser recordings far more than I, my listening sessions four to six hours with no fatigue, only tiring for bed time. Overall, I'd continue to judge 005 as natural, high resolving dac, this extremely small deviation from optimum not a serious liability. I'd also say I'm not at an end with possible improvements here, more streaming upgrades on the way, I fully expect greater analog, less digital presentation in future.