Is there any difference in the SQ between your Airport Express and Apple TV? If the Apple TV is not as good, it might be the Kanexpro. I have 4 systems, 2 using an Airport Express and 2 using Apple TVs (the 3rd generation using the optical output). I can't detect any difference between the SQ using either the Airport Express or Apple TV, they all sound wonderful. The SQ on all 4 systems is neutral to slightly warm with no harshness at all, I can listen all day without fatigue.
A while back, I auditioned a Node2 and found no difference in the SQ between my Airport Express or Apple TV and the Node2 using my external DACs. I did find that the SQ was not as good using the internal DAC on the Node2. This was wirelessly streaming lossless ripped CDs on my Mac.
A while back, I auditioned a Node2 and found no difference in the SQ between my Airport Express or Apple TV and the Node2 using my external DACs. I did find that the SQ was not as good using the internal DAC on the Node2. This was wirelessly streaming lossless ripped CDs on my Mac.