I've had the Sony X3 a couple of times for business and listening to the Zero now on a Topping E50/SMSL SP200 and there's no comparison. It's just better in every way except for wireless convenience. The bass is accurate instead of artificial/bloated on the Sony. This doesn't need any EQ or changes for music, but dialing down the bass for gaming is needed so explosions don't drown out other sounds. The Sony just doesn't resolve tiny details like these do. I use a long extender cable to walk around the room without taking them off. I'll take that compromise any day over the Sony. They do need current, not just a phone or onboard sound to be their best.
Also I have a Sabaj A20h and Topping L30 II and they just sound amazing. On the Moto G Power phone or onboard they just don't get loud enough for a favorite song. Also had the Bower & Wilkins PX7 Carbon a few times, better than the Sony, as was the Bose Quietcomfort II 45 and even the 35 we use for TV watching. Sony completely sold out their consumer products for artifical sounding single note bass. It's popular for teens who want to bounce in their chair during hiphop songs, but if you want to hear everything accurately, the Truthear Zero will do the job much better.
Also I have a Sabaj A20h and Topping L30 II and they just sound amazing. On the Moto G Power phone or onboard they just don't get loud enough for a favorite song. Also had the Bower & Wilkins PX7 Carbon a few times, better than the Sony, as was the Bose Quietcomfort II 45 and even the 35 we use for TV watching. Sony completely sold out their consumer products for artifical sounding single note bass. It's popular for teens who want to bounce in their chair during hiphop songs, but if you want to hear everything accurately, the Truthear Zero will do the job much better.