You may be used to extreme bass over-emphasis in your headphones, so they may sound a little like they don’t have much bass at first. The HD6XX is often considered the best value for money at the moment when it comes to a laidback, neutral sound with a warm touch.

Once you realize that these headphones are way beyond most USB dac/amp combos you'll appreciate how good they can be. Additionally, songs will appear a lot “clearer” than you might be used to because there aren’t any ranges of notes that make it particularly difficult to hear others.The main problem is I feel like the back of the left headphone touches my ear too much or just fits in a way I need to fuss with. You should easily be able to drive it through the SE output of your DAP but I highly recommend getting a balanced cable for the HD6XX and using more quality power available from the balanced outputs.

Assuming of course that they beef up the construction materials because while it’s almost HD6X0-tier sound, the build quality still screams “yes, I’m a HD500 headphone”. That’s not a deal breaker, but it could be problematic down the road as regular wear and tear eats away at the coating. HD560S has slightly less clamp force compared to HD6XX but I find them almost equally comfortable for my head. Plucked strings like guitars sound like they’re severely lacking snap, and bowed strings sound like a heavy cloth has been draped over them.

Also, this unit was provided to me by the DIYer Zerousen who further modified it with a 3D-printed MMCX bracket, but it should still be virtually identical in sound. I could sometimes tell if they were to my left or right, but since Apex is a movement game and has a lot verticality involved, it would be really easy to lose their positions.