Ipod with good headphones, what Codec and Bitrate??? 2018-08-24 18:03:29 Hi,first time poster here.I have an iPod running Rockbox which is almost full with m4a 256 tvbr files.I want to fill more music, so i am thinking about transcoding my flac files with a lower bitrate, maybe with a different codec.I just tried some ABX tests, and above 70kbit aac tvbr i was not able to hear a difference:-(Even the 32khz files sounded transparent to me:-(((Maybe i was just using the wrong music. I listen to Jazz, RnB and Reggae.A test file from the internet showed that i am able to hear up to 18khz.I would just go ahead and use 128 tvbr aac, but i did a blindtest with a friend, and he is able to distinguish even 256tvbr music from flac.So to those who can hear a difference above aac 128kbt tvbr:What codec and bitrate would you use today, if space is limited, but still you want very very good quality?aac 160? 192? 256? or maybe even a different codec?Thank you guys!