[Niouke]

very interresting. I ticked when reading "low impedance BA IEM's". I was thinking that I own BA IEM's that have a low impedance on most frequencies, but as you climb in frequency, the impedance becomes quite high (~90ohms):

What would be the impact of a low impedance source for these IEM's?

 

[castleofargh]

a low impedance source wouldn't really have any influence, that's the reason why we always suggest a good damping ratio. it's kind of the other way around, a high impedance source would change at least the signature(electrical damping isn't really important for BA driver).
precise magnitudes require a little bit of math, but the general idea is that when you increase the source's impedance, you make the sound relatively louder at the frequencies where the IEM has higher impedance. so in this case using a higher impedance source would result in a trebles boost. like applying a small EQ with the general shape of the impedance curve but with really small vertical axis. (does that make sense? ^_^)

 

[Niouke]

ok that makes sense, thanks.