No news about my RAL cable, I believe I will be receiving by the end of the month or even september.
Anyway, I do have a quick update. I have been comparing the Hex (out of usb, simple usb cable) with the Museatex Idat44-mobile + Belkin Synapse Platinum coaxial cable, which some of you might have heard, as brought up by Romy the Cat as a great digital. The main characteristics of the Belkin are a very powerful, super deep bass response, very wide sound, slightly vocal recession.
With the Omega 2, I have been quite flattered by the difference. The Idat was sounding better, mainly because the bass depth was endless. The Omega 2 have an incredible bass response which I was missing out of the Hex with usb, but was there with the Idat/Belkin combo. Enough to say that it would be already an end game setup (with 'just' a slightly improved KGSS). The Omega 2 sound as, when doing a huge bass hit, they are already 'there'./ Lambda's as well as most headphones, would remind you to someone who, before making a jump, would have to run 10-20 meters to gain speed. The O2 make their bass hit immediately, with super authority, it has a wonderful quality. With the Idat/Belkin this effect is best. Anyway, today I have tried the Belkin with the Hex. I obtained the same improvememnt in bass depth, power, and spatial rendition. Compared to the Idat44m, this combo has a bit more detail and widespread imaging, while the Idat accentuates more the center imaging.
It has to be kept in mind that I am using a cheap usb cable, at the moment, with Hex. But, also, that the coaxial source is my computer Realtek soundcard (Bitperfect). I know this card pretty well, and it's quite decent in my opinion, but it cannot compare with higher end transports (being a FIFO, the Zodiac Gold coax digital out I had tested in the past, or several others like an Offramp or Diverter HR). Although these are only partial conclusions, it already shows a limitation in USB, that in my opinion is wider than what 6moons stated, compared to the full potential of the DAC. I will have to try soon my friend's Acoustic Revive twin usb, and hopefully soon, the RAL cable.