I have the DCA Noires, as well as the Focal Radiance for balance. I would put the HDB 630s’ tuning somewhere between They don’t punch as hard as the Radiance, and nor are they as open & detailed as the Noires… but at the same time, they are better tuned and almost as fun hdepending on genre). The bass is comparable with the Radiance (even if without the dynamics), but much better extended. I’ve never heard the Radiance rumble like the 630s, and the Noires don’t come close, even while the Noires’ bass is just as clean and accurate. I believe the Noires’ treble is very much like the 630s’, and more accurate than the Radiance.
I cannot tie the 630s’ to any genre, and also believe there’s much subjectivity to what I’m claiming. All while there can be absolutely no argument that the HDB 630 can are a much better value, offer features that do not come with wires, AND much more portable.
#jussayin
Edit… Tonight I thoight I’d pick an album and listen to it with the HDB630 and the DCA Noire headcans. I picked London Grammar’s “California Soil”
First off, comfort and clamp are comparable, as is isolation…
Tuning is significantly similar, including a divot ~2-3kHz that’s claimed to enhance the 4-5kHz region. And, I think I hear that sometimes in the higher reaches of her voice, moreso with the Noires but I don’t find it objectionable.
The Senns are warmer in the sense of being in a room with proper speaker placement, whereas the Dan Clarks remove the front & rear walls. The Senn’s bass is also very much more extended, and does it rumble!
The pairing reminds me of why I purchased (… and have thusfar kept…) the Focals to go with the Noires. Comparing the 630s with the Noires is not about finding anything objectionable, only different but respected. For me however, I’ll probably be listening more to the Noires, as their musicality is just a touch more textured and real, while knowing I have near equal fun option when on the move…
Cheers