I too am running a MAC with iTunes as a digital source. I send the signal wirelessly to an Airport Express plugged into an aux jack in my preamp. The sound is pretty decent but far from the quality I get from my $100 Denon CDP. The DAC in Airport Express just isn't audio-grade.
My next step is to run optical out from the airport express into my new CDP, a Resolution Audio Opus which I chose because it offers a second digital in. This way, I will be able to use the DAC inside the Opus for the computer files and I am expecting a significant improvement in sound. I am now in the process of re-burning all my cds using the lossless format instead of the ACC compressed file format. Lossless offers a bit-for-bit exact copy of the music. You "read" the cd once so there is no concern about not getting a good read and the hard drive transmites a perfect signal. Issues with jitter and reclocking remain but, from what I am reading, solutions for those are at hand.
I think that digital files from computers will be the number one digital source within a few years. Those still using CDP and inserting cds will be a in a similar position to the minority who still prefer vinyl discs. Most of us will have the incredible convenience that computer-based song selection provides.
Going lossless, which you will want, requires ALOT of hard drive space. You'll need 1/2 the space of the native file (somewhere around 300 - 400 MB per cd) and the mini won't be able to hold many cds. But, you can get a 250GB external drive for about $250 so the cost of extra space is very reasonable.
Please post your results with your set-up as it progresses.
My next step is to run optical out from the airport express into my new CDP, a Resolution Audio Opus which I chose because it offers a second digital in. This way, I will be able to use the DAC inside the Opus for the computer files and I am expecting a significant improvement in sound. I am now in the process of re-burning all my cds using the lossless format instead of the ACC compressed file format. Lossless offers a bit-for-bit exact copy of the music. You "read" the cd once so there is no concern about not getting a good read and the hard drive transmites a perfect signal. Issues with jitter and reclocking remain but, from what I am reading, solutions for those are at hand.
I think that digital files from computers will be the number one digital source within a few years. Those still using CDP and inserting cds will be a in a similar position to the minority who still prefer vinyl discs. Most of us will have the incredible convenience that computer-based song selection provides.
Going lossless, which you will want, requires ALOT of hard drive space. You'll need 1/2 the space of the native file (somewhere around 300 - 400 MB per cd) and the mini won't be able to hold many cds. But, you can get a 250GB external drive for about $250 so the cost of extra space is very reasonable.
Please post your results with your set-up as it progresses.