Zx2 has LDAC transmission included by Sony and not due to it being an Android OS. OREO is the first android version to have LDAC for phones.
If the track has lots of bass, it emphasizes it. Modern pop, etc.. tend to support the music with bass. But, certain tracks that's more instrumental with or without vocals don't really get such bass because I think the bass starts to lift at about 200hz.Listening back many of old CD collection, there wasn't any bass to heavy problem. Look like record labels especially those Pop stars label, have intentionally have their songs EQ to heavy bass tuned
The sound recording engineer or producer should choose to record all instruments in their original sound quality, not emphasis it or specially tuned for heavy bass
Unfortunately, this is not the reality, and depends on the type of music genre. This is why even with transparent gear, we get variations in recording response. For pop music, it's the type of sound they'd like to try to create new/different sound, and make heavy use of electronic sounds and processing. There are also sound producers that are into specific genre of music like classical or jazz, or other types of instrumentals taking importance in raw-ness of sound. I think it's just a matter of what music you'd like to focus on. Somebody may prefer the lifted bass of the XM3 due to their music preference in more mainstream pop and hip-hop. Fortunately, the headphone doesn't get upper-bass warmth of the Beats which creates too much mid warmth that reduces coherency.
That's why the old rock bands like the Led Zeppelin, Rolling Stones, Eagles, Gun N' Roses, Police and even Michael Jackson CD still ROCK, still AWESOME!!!
Thanks for clarifying
I should have qualified my statement. Android manufacturers have always been able to add any Bluetooth codec they want to their own devices. Sony has been putting LDAC on their Android devices for years (Xperia phones, and players such as NW-ZX2).
