Man, not only did this item only take a week to get to the states from China, this DAC is incredible! I've been using my Denon X2300 for my media, music included. I have a 7.1 with Klipsch RP600m 500c and 500m for surrounds and it's been perfectly fine so far. I've been itching to get a DAC for more detailed listening and this DAC does not disappoint. The soundstage is large and extremely clean. It brightened up my music and gave life when I didn't know it had none. I swapped the op amp with the one they gave me and it's slightly less powerful but gives you a little more body. I liked the one that came pre-installed personally. I look forward to buying an op amp or two in the future to play with the sound even more. That being said, be careful of the screws that hold the cover on. I used the tool given and instantly stripped a screw. Thankfully I had a TR6 bit and got it out. They're in so tight they snap when you bust them loose, so make sure when putting them back in do not over-tighten.