I am approaching the Abyss AB-1266 quite differently from Rudi.....For me, it has been trying to get the best sonic performance out of the Abyss, no compromises..
It has been an interesting week, as I am looking for new home speakers to replace my Magico Q5, the natural progressing is the Q7. I auditioned the Q7 on Tuesday, powered by the TOTL Constellation Pre and Power amplifiers and sourced by the 4 stack dCS Vivaldi. The sound emanating from this system is without a doubt, sublime. The accuracy, resolving and transparent nature is stellar. Everything was life size and true to proportion.
It bettered the next best system I heard this year which was the Pluto turntable, Boulder phono, pre and power amps (3000 series) and Wilson Alexandria XLF.
Back to the Abyss. After listening to the above system, it redefined/ reaffirmed my references, and I set about moving the sonic character of the Abyss towards what I heard. I acquired a Nordost power cord that fed my power conditioner and used all silver/gold cabling ahead. The better Nordost cables are known for their speed, transparency, slight upper mid and high tilt, and soundstaging capabilities. What I was not expecting was the sheer improvement in the bass. Resolving, harmonically rich, great weight and locational/directional.
With the mids and highs, it gives me the improvement that I sought. More precision, liveliness and spaciousness with better nuances. The highs has more shimmer, sparkle, dynamics and weight. Impact on cymbals has improved significantaly along with the ethereal decay glow that surrounds the cymbals after it is struck. The transparent and revealing nature of the Abyss are first class along with incredible detail that it is able to portray!
There a few more things that I would like to make on my system, which includes a third party power supply to the Lumin Music Player, another Nordost power cord and their QX4.
Again, I will reiterate that, in my opinion, in the current market place, no other pair of headphones comes close to the Abyss, and it is the only headphone that gives me a semblance to the above speaker system.