I am now a proud owner of an RSA predator amp/dac! I love the way the amp sounds now and I know that it will keep sounding better as I burn it it. I do have some questions and concerns about the DAC section of the amp. When using it with my macbook pro, I was surprised with the fact that changing the volume on my computer while the dac is functioning actually changes the volume on the amp. I own other soundcards/DAC's, and none of them do that. Once connected to my mac, the devices bypass the software volume control and use the hardware instead. On the other hand, the predator's volume can be changed from the computer and from the volume knob on the device itself. Also, the DAC section sounds horrible with Itunes and all media/music players I've tried. However, the music on Grooveshark sounds very good, so I am really confused about why the DAC section sounds terrible with itunes, quicktime, vlc, etc... but sounds great with an online music player such as Grooveshark. I really hope there is a quick fix to this because the last thing I'd want to do is send it back for inspection/replacement. When I say terrible, I mean worse than plugging my headphones in my mac's headphone output; Which for those of you who own a mac, know that it's horrible sounding.
Thanks for your support!