OK so you Midoo, you ask me quite a few specific questions. Although I have been an audiophile since the late 60ies, when I purchased a Mac 1500 Hybrid receiver, the then top of the line Koss earphones and 2 large Tonnoy Gold speakers and one of the top of the line record players and a Revox 15 inch real to real Tape recorder. and since then have added the Quad Electrostatic speakers and B& W DM-6 and the B&W 805, and now I own the HD800 and the Meier Audio Symphony 2 Head amp and the JH 13 and the MC 2200 Macintoh amplifier. I obviously love quality sound. However I do not listen in parts.
I did do the test you suggested with the JH13 downloaded the files and did hear both the bassier
and the other sound.
So now, I listened today to an Opera and AB-ed the JH13 with HD800. I turned up the volume for the JH13 short of suffering volume until I could make is as lively as I could without hurting my ears. I listened to three songs or parts of the Opera. Since in order for me to hear the earlier bassier sound I had to push in the JH-13 deeper into my ear, it remained there for the Opera. The sound was excellent but restricted into a small space like a spot light in a theater. and I enjoyed it but I did not sense the excitement I used to feel when I used to listen with a Zune and a Sure 530 earphones, that always surprised me with the bursts of trumpets and the suddenness of music, the very quickness of them.
So then I listened to these three songs with the HD 800. I had to turn the volume up quite a bit to hear the music with the same loudness until it was not offending my ears.
Suddenly there was a wider space, the spotlight vanished and a stage opened up, the opera singers were singing to me and gave the illusion of being in the same space with me, there was an exciting crescendo which was absent with the JH13. There was a pleasure of relaxing and listening without any fatigue. There was more presence more immediacy and and the images of the performers were crisp and lifelike. The bass in the HD-800 was actually hinting of real bass making me think it was pressure on my entire body like good set of real speakers make you feel. Most reviewers of the HD 800 did not like the bass that much and I am very happy with this bass. The Meier head amp Sumphony 2 is also quite well matched for the HD 800.
So instead of the answers to your questions it is easier fr me to give you a less technical but more musical response to the ear phones JH13 and HD 800.
Now I need recommendations of a player to replace the AMp3 that will work best with the JH 13 since I used them for my music in transporting myself in my vehicle and in nature. A player that will not roll off the bass nor the highs and not need an amp. How do you feel about a Cowon? I do not use my player for video nor pictures, but want as much storage as I can get on it, to randomize the songs. I want fine quality, and prefer it to act like a hard drive rather than syncronizing. What is the new Zune like? does it compare to the high end of others you may suggest?
