You are obviously very passionate about your music and I think its great that you have found such pleasure with your HD 600 based setup, but I think a little dose of reality is in order here.
The HD 600 is a transducer, created by engineers to turn electrical signals into mechanical movement and emit sound. There is no mystical spirit living within the earcups adding rainbows and honey to the sound waves, and no amount of cable tweaking or power conditioning is going to change that.
The emotion you feel and the tears that run down your cheek are a personal subjective experience you enjoy while listening so music that moves you and for you, the HD 600 is the device that best delivers this for you. Purely subjective, of course, and different for everyone.
Again, its great that you enjoy your system so much. Im just putting forth the counterpoint that your particular opinion of the synergy of the HD 600, amp, cables, power conditioner, etc. is purley subjective and quite probably not repeatable by anyone else.
As for me, I really like the HD 600, but I have never been moved by any headphone the way you have. I need speakers to experience natural front soundstage, delays, reflections, and a sense of envelopment. The brain is able to adapt remarkably well to the hard left/right separation of headphone sound and "fill in the blanks" to make it enjoyable, but I would never say that headphones sound "like Im there." Thats impossible with headphones without some serious DSP... (And no, binaural recordings dont do it either - even the best ones dont present a true front soundstage to me).