I’m still wondering who this headphone is for. It’s more expensive than the HD6XX while offering a seemingly similar sound signature. The build and comfort also appear similar, though obviously it’s of the 5XX family rather than 6XX.
It just seems to me like Sennheiser doesn’t really know what it’s doing on a fundamental level. Other than the HD6XX and HD800S their lineup is either mediocre or uncompetitive due to pricing.