ND5 XS

Hi all,

I am currently running my music from my MBP (Lossless), wireless over my home network to my SN via an ATV3.

Looking at the ND5, can someone kindly explain the benefits of using one over the MBP?

The only reason i ask is that i know Naim say 'source first' on the upgrade path, but, if it does little more than my MBP, then it seems my money could be better spent elsewhere.

I was looking at picking up a CD5X, but, with iTunes ripping in LL, for me, i am not convinced i really need one anymore!

Thanks for any info.

Oh, and Merry Christmas!