Audio tech, well old, I used a pair of bluetooth phones no aptX, could hear all of them apart from the classical piano surprisingly… the recording sounded compressed and noisy in all of them to me?
Sometimes lossy encoded files do nice things to certain tracks…. ❓
It just suits them.
MP3 is rubbish and kills some carefully crafted, music but the encoder is the important part and has improved hugely.
All the high end 192/24 HDRs do not sound the same either.
NS 10’s are used as they are rubbish and if it sounds OK on those you are unlikely to have troble with a mix played back on nearly anything.
I have to laugh at some purist drivel you hear as most recorded music has passed through miles of standard cable and processing circuitry before it gets anywhere near the mastering stage and encoding for different formats.
Dolby SR Ampex 499 1/2″ @ 30 IPS > Vinyl(good quality heavy stuff) still sounds the nicest to me 🙂