I have the SE-MASTER1 as part of a bundle for an amp. They're like a weird merge between the TH-900 and the HD800: bassy, airy, v-signature, and slightly sibilant depending on the amp. Not recommended: for this price you can do a lot better. Also, they use MMCX connectors that you find on IEMs for a full sized headphone. Even though the cable is technically removable, it's hard to find any non-IEM MMCX cable that fits securely.