Audiophile2019
100+ Head-Fier
True.. In fact, IMHO (to my ears at least) the best sounding combination of headphones & DAP I've listened to is MDR-Z1R with WM1Z.. It's so complete & detailed, a beautiful blend of bass, mids & treble with wide soundstage, even for a closed-back.. Not even SP1000M, DMP-Z1, etc can do better..Don't expect to use any cellphone, or a cheap dap, cheap CD player to make Z1R sing. Which mean Z1R need more expensive device to run it better, something like WM1Z, DMP-Z1, Paw Gold/Gold Touch, SP1000 and so on..