I realize I put my impression in the wrong section, so reposting her in Reviews. -- Back to report my experience with the P5. I am going to copy most of my thoughts from my youtube comments under Honest Audiophile's video on these. First, I drive them off of an iPhone dongle or MB Air headphone jack. I also tried them out of a very old Portaphile amp, good quality, and the sound signature didn't change. My scores reflect the sound with the eartips I found that provide the best seal (wide bore)... Still, an 8mm ordinary driver for a $220 DD/BA...