Will do. d marc0 gave me a great tip the other day (I've been volume matching with a test-tone at 1 kHz) - to switch to a 3 kHz tone as it's where more of the vocals lie - so I'm keen to test this out.
Because these are so smooth - I've just been finding that it's easy to bump the volume up a bit. Going to try them with a Studio V3 Anniversary Ed today (brighter DAP), and see how they pair with that (I'm expecting good things). Also keen to try a little EQ using Acudio Pro on my iPhone. A little bump in the upper mids and lower treble to give things a little more air might make these just about perfect for me.