CAPS 3.0 Zuma vs Mac Mini

Sgr, If you transfer files to DAC using Ethernet bridge then nothing that you mentioned makes any difference since they affect only timing while you transfer data (no timing). Some things might reduce overall noise but things like amount of RAM or processor speed make no difference at all. Solid State Drive might reduce ambient electrical noise but does not affect data sent. Playback program makes difference only if it does any processing. For direct transfer even Itunes will do. Again, it is for Ethernet bridge (or wirelsss) connection.

Some things like type of Ethernet cable might change overall ambient noise and the same goes for the computer. On the other hand faster computer can make it much worse generating more noise at higher frequencies. Amount of RAM makes no difference as long as computer can run. What is being send on Ethernet has no time base - it is data in packets. On the other side of the bridge timing is recreated. It doesn't matter if packet is early or late because it goes thru FIFO buffer with new clock. Yes people experienced improvements with faster computers, more RAM and better playback programs but not in Ethernet or Wireless connection.

As for my (wireless) system - no difference with playback program or amount of RAM (no surprise here). No difference between internal or external HD. No slightest difference when I use computer for other tasks during playback.