ER4S loan has arrived.
Through the iPhone 5S:
Impressive sound. A bit different than I had expected over the years. Has its share of problems though that are very quickly apparent.
Wish I could run it through the 4S > Quickstep but it's on loan. I'll try the 4S and the D100 II and see what's up.
Most unexpected part:
Surprisingly heavy and dense images.
Looking forward to your impressions! I curious as to whether the mids sound louder to you than midbass or treble using tones. Also, you might want to check out some useful eq settings we've posted in this thread. They're basically a 6-7dB boost at 20Hz, and a 1-2dB boost at ~7.5Hz (this area tends to differ from user to user). Luisdent might be using a cut somewhere too. Overall though the eq needed is quite minimal imo, less than anything else I've heard except maybe the MH1. It would be really cool if you were able to try red filters, but I realize it is a loan...