I used to have Momentum 2.0, they were... okay. I then upgraded to B&W PX8, most people agree that they're on a whole different level than the Sennheiser Momentum 4. HOWEVER, compared to the Hifiman Edition XS I use at home, they're not as good. I doubt the Momentum 4 is as good as a proper wired headphone setup and they sound their best wireless, because they're designed to be used that way. The only time you'd use them with a wire is if they run out of battery and even then I don't know if they even work "passive"/unpowered.