Most likely he was referring to recording flaws, ask him yourself if you want to know for certain.
There's actually a huge variety in recording quality between different lossless recordings, the worst offender today is albums that have been highly dynamically compressed.
Some people have suggested that lossy compression makes the music sound "better", under certain circumstances, like with gear without much dynamics or resolution, or recordings with much harshness. I would even suggest playing around with ogg vorbis codec if there's an album you really like but find too fatiguing
, this is something I've experimented with and I do think lossy is fun, but I think it has no place in high fidelity. With the discontinued compass, I could see having a good percentage of your audio in lossy as the compass was about relaxed and musical sound and the effects of lossy compression weren't in opposition to such a sound signature. I still use the compass even though I have quite better gear, because the compass is so relaxing. But the current audio-gd entry level acss dac/amps are in another league when it comes to technical ability. With something like the sparrow I think the better dynamics aren't being used by lossy compressed music, and at the same time it is resolving more of the artifacts in lossy compressed music. I don't consider the sparrow "real-life" high fidelity, but I do think it is at the doorstep of such realism, so I find the idea of using lossy music on it an abominable idea
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