I am using Cowon Plenue D, which sounds amazing for the price, and i have Beyerdynamic Custom One Pro. But i wanted to use spotify also, since new phones don't have headphone output, it uses usb-c > 3.5mm adaptor, which is really junk. So i though i would get a bluetooth headset. I bought Sony Wm-1000xm2. I had high expectations, since i tested Sony Mdr-1A, which sounds really amazing for the price. When i first listened to 1000xm2 i thought it needed burn-in. Now i have used it about 20 hours, and still sounds too flat for my taste, since i am coming from Custom One Pro, which has lots of detail, sounds warm and wide soundstage. I am thinking of giving Sony 1000xm2 back. But every reviewers gave very positive comments. Am i missing something? I tested A-B wired and bluetooth with Custom One Pro. There isn't any area that Sony sounds better for my taste. No point of spending 350$ just for bluetooth, which has a very low quality compared to wired connection.