I just ordered the O2 + SDAC from Drop and noticed I will have to order an extra power adapter for EU. This puts me over the price of a Fiio K5 Pro. Should I get the Fiio instead? I see the Fiio can deliver more power but does it sound better?
I have the Fiio K5 Pro and an O2/ODAC and I can't really tell the difference except for the Fiio having more power. They are both very good clean sounding DAC/Amps for very good prices and will easily power most headphones on the market today. I use the K5 Pro as my daily driver because of the optical input it has and I haven't touched the O2/ODAC since. If the K5 Pro is cheaper and you won't need an adapter then just get the K5 Pro, you won't lose anything.