So you KNOW you can hear the difference between lossy and lossless. The first thing I say to this is the difference between high quality lossy and lossless is negligible in that 1% of music recordings that there may actually be different. Since you claim you can hear the difference when they are identical might indicate you are delusional. Let me explain… a quote from http://journal.plasticmind.com/ears/mosquito-tone-or-how-to-tell-youre-a-youngun/ The page has hearing tests and a hearing chart http://journal.plasticmind.com/assets/12ring-graphic.gif Just incase the site gets deleted here is some of what is in the chart Note - the low end is for persons that do not listen to loud music or noises, ever. It has NOTHING to do with your IQ. 18 – 24 yrs can hear up to 16 kHz 30 – 39 yrs can hear up to 15 kHz 40 – 49 yrs can hear up to 13 kHz 50 – 59 yrs can hear up to 12 kHz To hear 20 kHz you need to be maybe 5 yrs old Highest note on a piano 4KHz Highest note produced by a human voice 2kHz Lame VBR at its second highest setting captures 19383 Hz - 19916 Hz. I could not find what the highest setting but it is likely to be 20,000 or the same as lossless or so close to it doesn’t matter. Even at 19916 the difference is 1%. Hearing is one of our least accurate senses. Claiming that you can tell the difference between lossless and lossy is pretty much an ignorant boast. It assumes that what you are listening to actually has some note that is higher than 199920 Hz which is rare. 1) Probably in a random sampling of popular music probably less than 3 out of the hundred recordings ACTUALLY HAS a 20,000 Hz note. Since most recording do not have 20,000 Hz tones and you think you can hear the difference when there is none you are deluding yourself. 2) Even if you have a recording that has a 20kHz tone loud enough for you to hear, it is still like claiming if you are looking at a 100 ft tree you can reliably see at a glance if the tree was only 99 ft high. It has to be at a glance since the resonance tone may not last for even a second. Remember sight is out most accurate sense while hearing is our least accurate sense. #0 Lastly, the high tones are only resonances. A high C is not even 2 kHz. Primary notes of any instrument are all below 5 kHz. Fletcher–Munson effect (to hear tones as the frequency increases the loudness must increase log rhythmically to be able to hear it) requires a tone that is 99.99% of your hearing limit to be over 100 times as loud as the primary note to be able to hear it which they can’t be since they are only resonances.