Renaat:
If you own both the Grand Reference and Nirvana ICs, it certainly can't hurt to try both in your system and see which you prefer. If you don't, which is what I think you mean, I definitely wouldn't trade the Nirvanas for the Grand Refs sight unseen or unheard. As I said, they have radically different sounds, and you really need to hear both back to back to make an accurate judgement. Give a call to GTT Audio (I don't have the number handy, but they have a website) and see if they'll loan you a pair of Grand Ref speaker cables for audition. Good luck!
If you own both the Grand Reference and Nirvana ICs, it certainly can't hurt to try both in your system and see which you prefer. If you don't, which is what I think you mean, I definitely wouldn't trade the Nirvanas for the Grand Refs sight unseen or unheard. As I said, they have radically different sounds, and you really need to hear both back to back to make an accurate judgement. Give a call to GTT Audio (I don't have the number handy, but they have a website) and see if they'll loan you a pair of Grand Ref speaker cables for audition. Good luck!