Very happy with r50x, i dunno if i want to try for auction for sony mv1 now, r50x are so light, so comfortable, and disappear on head exactly like sony ma900, vocals sound so close, so intimate, and they are not overwhelmed by any instrument, separation so good between instruments, bass is there, but not slamming/hitting hard, still good for my taste, if i want better bass, i'll pull a closed back, i dunno if they were supposed to be brighter coming of ma900 / hd560s, but they sound so laid back yet busy and i get goosebumps with my favourite progressive metal, sludge, gothic metal tracks, more fun than unEQ'ed Sundara to me, i think more details than hd560s too :/ i think not as dark as ma900 (which i still love for that), which is still good. NonEQ'ed, connected with Fiio k7 = bomb, delivers all the juice r50x needs (high gain + 55%-70% volume knob). Writing this as i am listening to music for 60mins+ with r50x now nonstop. Last thing left to check imaging and soundstage in FPS games... One thing i know, if r50x was released in 2022 before i bought sennheiser hd560s, i would have skipped buying hd560s and sundara and corsair virtuoso pro for sure! They seem even better sounding than Philips x2hr / x3 for me out of the box