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Mysterious-Evening-7 t1_j67bayg wrote

Reply to comment by ThelceWarrior in These are not the same by disco_g

My EU Apple lightning dongle doesn’t power my Ety ER4SR to high volumes in classical recordings (i.e. not normalised/compressed by loudness wars) in any but the louder sections. It has a sensitivity of 97 dB (45 Ohm impedance). I’d love to have that dongle without the EU constraints.

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blorg t1_j67lo4e wrote

The ER4SR is particularly low sensitivity, I think this is because Etymotic use a resistor to tune the BA in them. There are a handful of IEMs like this, Final E5000 and Symphonium Helios are two other examples, they are even lower sensitivity. These are really outliers though, the vast, vast majority of IEMs are easy to drive.

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Mysterious-Evening-7 t1_j67r1tq wrote

I also have the E5000, but never tried them with a proper amp. Always thought these were just boring, treble hating stuff

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blorg t1_j67shai wrote

I find them dark and veiled as well. They do need a certain amount of power but they are still dark and veiled whatever you run them off, that doesn't change.

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