Is there any way to get two dedicated lines? Either way, I recommend two power conditioners. One for your mac mini, screen and all "other" things and one for your amp and dac. You really want to separate the computer if you can.
As far as specific brands, I like BPT for value and Isoclean for top end performance.
As far as specific brands, I like BPT for value and Isoclean for top end performance.