I think Astell&Kern quite successfully divided the line of its flagships, where sp2000 is created for audiophiles and sp2000t for music lovers. Sp2k has a reference sound, with excellent technical sound characteristics, it has everything you need for analytical listening to music. SP2kt falls a little short of the level of SP2K in terms of technicality and analyticity, but provides more emotions, drive, engagement and fun than sp2k, slightly coloring music with its tube, analog sound. In addition, after listening to sp2kt for a month and a half, it seemed to me that it has a deeper sound stage, a more noticeable holographic 3d effect than sp2k. So if you are an audiophile and prefer to analyze the sounds, more technical and analytical sound, sp2k will be better for you. If you want to get more emotions from listening, more engagement and fun, if you want have both tube analog and digital hi fi sound in your pocket, than sp2kt will definitely suit you more. It will also be the best choice for vinyl lovers.