I've had my etymotic er4s for around 4 years now. I've found them lacking on my iphone3gs and desktop (onboard sound card -_-). I'm looking for some ways to improve its performance. I've heard that the arrow g4 is a nice complement. I ordered ACS customs, so I'll see how that turns out when they get in.
My friend told me some time ago about an equalizer for windows that someone tweaked specifically for the er4s; has anyone heard of that?
Thanks in advance