It's my opinion that DACs have subtle differences between them. They are subtle, which means I don't think that one DAC is vastly better with one set of cans than with a different set of cans. I would research DAC sound descriptions that seem to fit your musical tastes. For example, the Musical Fidelity VDAC is said to be a hint warm, which is said to pair nicely with analytical cans, like Beyers. If I were going to buy a DAC, that would be at the top of my list to pair with my Beyer DT990s. If you prefer more neutral or colder DACs, there are some of those out there for you to explore as well. But, I think DACs are only subtly different, so they're not night and day different.