Proč mají tato sluchátka frekvenční rozsah 20-20000 Hz a označení Hi-res audio, když Hi-res audio má mít frekvenční rozsah 20-40000 Hz? Pokud mají opravdu jen max 20kHz, tak je nelze označovat jako Hi-res audio. Nejde o textovou chybu? Děkuji za odpověď.
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