Duet 3 has an exceptionally detailed output sound with huge dynamic range, and two crystal clear sounding inputs. AD/DA conversion is absolutely the best I’ve heard among interfaces this size. Same goes for the zero Ohm headphone amplifier, which flattened my headphones’ frequency response and provided phenomenal clarity.
I also really like its minimalist and futuristic design. Some people don’t like the breakout cable, but I actually love it, as it allows me to hide all the connectivity behind the desk in a “set and forget” kind of way, keeping the desk nice and clean. If you’re on the go there’s a high quality travel case, also a great addition.
When it comes to drivers and software, I have not experienced any hiccups or dropouts or anything like that, everything works nice and smooth. Just make sure to update the firmware upon installation.
There are no outputs for the second pair of studio monitors and no MIDI I/O, but since I only need one pair of monitors and can easily record MIDI via USB it’s not a problem at all. I actually think that having these extra I/O would defeat the purpose of Duet, which is to be compact but best-quality-for-this-size audio interface.
