It does not challenge >1k headphones, still very much mid-fi.
If these had the naturalness of HD600 timbre, i would really like these. They dont though. Feels like they are just decent at most things. Treble doesn't feel high quality to me.
I had the HEDDphone2 here right before getting the HD 490 Pro - unfortunately no overlap. But for me the HD 490 Pro is overall the better headphone with better sound quality ( also comfort, driveability etc. no contest).
Funny how everyone wants this to be an improved HD600. I don´t have that one here for direct comparsion but let me say the goosebumps and smile on my face the last few days with the HD 490 Pro have been quite a good indicator that it does something right.
I was checking out some Dolby Atmos Blu-Rays today and it´s nice that an AVR can power these with ease and sounds good even if it has a bit of higher output impedance. Even with the mixing pads I was thinking I had a subwoofer in the room while watching Top Gun: Maverick. Also Porcupine Tree´s newest Live Blu-Ray and John Williams Live in Vienna were really enjoyable. I am used to these on my Atmos Setup and I was quite shocked how well I could make out details like different reverbs with these headphones that I don´t get over speakers.