phoneslave86
100+ Head-Fier
32 114.5 Db Ohm is the most transparent so it's the ideal. I'd imagine the others could be possible and sound good too. 64 Ohm 110 Db Beryl is easy to drive no doubt. 32 Ohm 107 Db Bio is noticeably a bit harder to drive than the others but still easy to drive. My IEMS at 30 Ohm 115 Db reveal way more noise in cases so I don't trust the ratings related to revealing noise. The Db sensitivity rating is how hard it is to drive more than anything else what to pay attention to. Impedance isn't really what makes it hard to drive according to Jack Woo.
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