I received these Bibacord AES/EBU cables from Vincent 9 days ago.
These do need considerable burn-in and/or settling time. Initially I was a bit underwhelmed by their performance, so I put them on my Audiodharma cable cooker for 3 days and then reconnected them for another 6 days of normal system time. This did make for a rather dramatic difference to their initial performance.
No doubt this is a considerable upgrade over the stock supplied Totaldac AES/EBU cables. It does have it's own distinct character, from their website: "Conductors are solid core OCC copper with cotton insulation." Despite being AES/EBU cables they sound somewhat similar to analogue cotton cables, those who have heard cotton dielectric / damped cables will know what I mean by that.
On to what they give you over the stock cables:
-Considerable increase in high frequency micro detail and delicacy
-Better midrange articulation, especially noticeable on piano and voices
-A more 3 dimensional rendering of individual images within the soundstage
-Better rendering of texture on individual images
-They add additional depth to the rear of the soundstage without changing the overall perspective
-Bass and lower midrange are "rounder" sounding, slightly loose but stronger, it adds a nice "warmth" to the presentation
-Together with the additional bass/lower midrange warmth and a softer high frequency presentation it makes for an excellent "digital sound" cure. It provides a very relaxed overall presentation and reduces listening fatigue on prolonged listening sessions in harsher sounding systems.
Although they really provide a very considerable upgrade over the stock cables, I will not purchase them, as there is a negative aspect to them for my personal taste, which is a reduction in open air live recording realism. For these I prefer the stock supplied cables for providing a more euphonic and exiting presentation. Audience applause for example is a bit softened which diminishes the realism for me. For anything else, jazz, blues, studio or indoors live recordings, which are more damped sounding by nature this is not an issue. If this is not a problem for you, I would have to say the ~Euro 2000 retail tag for a pair of these is worth the investment.