As always with lossy audio, different codecs have different "killer samples", but here are a couple of results from experienced testers that support the asserti

As always with lossy audio, different codecs have different "killer samples", but here are a couple of results from experienced testers that support the assertion that Opus at 64kbps is suitable as a modern replacement for 128kbps LAME MP3: https://hydrogenaud.io/index.php?topic=117489 https://hydrogenaud.io/index.php?topic=117489 https://hydrogenaud.io/index.php?topic=119424 https://hydrogenaud.io/index.php?topic=119424