I gave found the Cardas cables can sometimes totally destroy the life in a system. Perhaps that was happening for you. System synergy is a funny thing.
For example, I have been using the Altmann Attraction DAC driving Altmann BYOB amp in one of my five systems, which sounds nice. Herr Altmann insists nothing will drive his amps better than his DAC. I tried a transformer pre in between and it sounded terrible, as did a decent C-J preamp. Then I put my daughter's very humble Qinpu A-1.0X between them, using just the preamp section (the Quinpu is a cheap integrated amp) and the sound is fantastic, with more life and a larger, deeper stage than without it in place. Wierd, but it worked. It has set me off to find a 'better' preamp to do the same trick.
For example, I have been using the Altmann Attraction DAC driving Altmann BYOB amp in one of my five systems, which sounds nice. Herr Altmann insists nothing will drive his amps better than his DAC. I tried a transformer pre in between and it sounded terrible, as did a decent C-J preamp. Then I put my daughter's very humble Qinpu A-1.0X between them, using just the preamp section (the Quinpu is a cheap integrated amp) and the sound is fantastic, with more life and a larger, deeper stage than without it in place. Wierd, but it worked. It has set me off to find a 'better' preamp to do the same trick.