Hello, just joined the forum as I am in the same boat as the OP.
I was going to order the HE-400 + Senn HD600 (or HD650) do to some A/B comparisons. My current setup is Ultrasone Pro550. Output is PC > toslink > e17 > 1/8" jack. Music files are in various mp3 format, but of late been moving to FLAC with higher bitrates.
My music tastes have been changing from hip-hop/rap to more vocal and instrumental music. Songs that have real weight to the vocals.
I guess my question goes along the lines of comparison with the OP. What is the real diff between these two cans besides the $300 NIB price?
My upgrade plan was new cans, then Schiit Asgard 2 or Lyr and finally bifrost. I dont intend to go into the high-end headphone realm as I am also a big movie buff and the wife will only let me bankrupt us so much, so leaving some $$$ for the home theater is important.
All that aside I guess from reading this thread it sounds like the HE-500 will scale better than the HE-400. With my intended amp/dac future purchase and my current setup, would the HE-500 REALLY be worth it, knowing that the future purchase would likely be my last setup? Again I want one of the Hifiman cans to compare to the Senns. Would the better pairings be HE-400/HD600, HE-500/HD-650?
Appreciate your time.
Everything that can be said, has been said here. Read the thread and you will be enlightened.