'Headphone Impedance is the reaction when the voice coil found in the driver is affected by the magnet inside the headphone.'   I know there's more to it but is this sentence correct?   Edit: maybe reaction isn't the right word?

I've been looking at specs of headphones at some say nominal impedance (Sennheiser HD800, 650), some say input impedance (AKG Q701) and others say just 'impedance'. Is there a difference in the terms or do they mean the same thing?   I looked up impedance in wikipedia and it shows links to...

I'm going to be purchasing my first good IEM and after reading lots of reviews and opinions I decided the westone 4 fits what I'm looking for. But the one thing that's stopping me is the price. So instead I was thinking of getting the westone 2 and also the VSONIC GR07. Even though the two...

It's two drivers on each side so 4 drivers in total right?

So I've heard a lot of good things about the Westone 4's that suited my preference but I've also heard that the audeo pfe 122's have great sound that's comparable to the westones and they are little more than half the price. I haven't tried either one myself so I'm asking you guys: are the...