I'm very pleased with the V90. I bought it as an experiment. I was just going to upgrade my CD player. But I realized I had other digital sources that all would benefit from a DAC. I would just use my CD as a transport. I didn't know what to buy that would be inexpensive but worthwhile as a improvement over the CD player output. I figured I'll buy something inexpensive and if it does sound better, then I'll buy a real DAC. If it doesn't, then I didn't waste thousands. So I did a little research. There are tons of options in the $300- $500 price range. That made the decision hard. But then I found a V90 on eBay for a really good price and grabbed it. I'm impressed. It's far better than I expected. I don't feel like I need to run out and buy a "real" DAC at this point. I'm a vinyl guy that has spun about 40 CDs in the last few weeks. That would have been a years worth of CD listening previously. I'm sure I will get the bug and upgrade at some point, but first I'm thinking of experimenting with this DAC to see if it can improve. First up is a power supply. If I can't find a better ps I will make one. I have to think battery power to the DAC would offer improvements. Maybe a better cable than the Audioquest I'm using. Then I'll peek inside -but this kind of circuitry is foreign to me so maybe not. Anyway, I've proven to myself that I can enjoy digital. That's a good purchase in my book.