Oh yea. I actually had to delete "Another One Bites the Dust" by Queen from my playlist because there's a harsh high pitch effect used once or twice in it that felt like it almost shattered my ear. Hopefully that will resolve with a bunch of burn-in time. I was playing it pretty loudly which I normally don't like to do, but I found I have to with the GR07BEs to get everything I wanted out of them (impactful bass).
So here's a question. If I want some more impactful bass, would any old amp give that to me without having to increase the volume? How about one with bass boost? I don't really want the bass to be more prominent so that it overshadows the vocals, just more punchy mid-bass so that I can feel the drum smacks. Can anyone give me some tests with their amps (specifically something like the Fios amps out of an iPhone 4s would be nice). Some test songs: Hypercaine by DJ Fresh and Ghostwriter by Dead Ringer.
I actually know exactly what you're talking about on that Queen track, but I didn't listen to it until after the burn in period. There definitely were some songs in the same boat though that I did have an initial shock with, and it does tame down I can assure you.
If you are coming from anything with much more bass emphasis, or that are more impactful in the mid-bass, these will likely not get to that point. Trust me though, this is a good thing. These are relatively flat and neutral across the frequency range, with a slight 2-3dB bump in the mid-bass...enough to warm it up and give more impact over the original, while still preserving the mids. I personally think these have an accurate amount of impact and excellent bass presence now, but I can also say that they did feel they were lacking initially coming from the MG7 (known for it's bass presence, but it's not as bad an offender as most). The small bump does make the mids a bit recessed in comparison to the original, but they'll still be waay more present than any other bass-heavy presentation. You also get a bit more bass extension over the originals. There was a time in the beginning where I used EQ and/or a Fiio E11 amp, but I ultimately ended up with no EQ and no amp. If you want to try an amp though, the E11 is pretty good and it has a few bass boost settings that should work fine. I mainly used it with my J3, but I also tested it on my iPad and the GFs iPhone 4s so you should have no issue there. Another to consider would be the cMoyBB v2.03 by JDS Labs, or you can try building your own. I personally just thought the amp was overkill after using it for a few weeks, and it was a better pairing overall for my former RE-ZEROs. You also must remember that bass impact can also be very recording/file quality dependent, but just about anything electronic should sound great after the burn in period. I guessing by Dead Ringer - Ghostwriter you mean RJD2 - Ghostwriter off the Dead Ringer album? If so, I know for a fact that song sounds pretty great as I currently have that album on my J3