Amp is very powerful, but personally it is not interesting. When listening to music, you rarely adjust the settings (you prefer the original sound), and the volume button (* _ _ *) is the one used most. Beautiful daily life, many themes, dazzling interface, less functions than the former but more practical, currently in use. Cool dog's words o _ _ o "... My younger brother who listens well every day (personally) has given up the cool dog decisively since he used it every day. There is not much difference in sound quality (I can't recognize it anyway, sometimes I think my music player has better sound quality), mainly depending on the mobile phone hardware. So practicality is king. Use ttod.