NO doubt!
That's why I said IF. You're absolute right. Get the cans first, and if you don't have an amp up to snuff go for that for SURE.
Then, if you can, pepper the sound however you like w/ anything else (cables, Stein products, etc.).
I wasn't a big fan of Lehmann, but I just wrote about the Lehmann Audio Linear w/
@HiFiGuy528 and I really loved it w/ my HD800's!
So that's less than 2k - I even like the CEntrance HiFi-M8 w/ my HD800's! That things like a desktop amp and portable all rolled into one!
This is a point I shouldv'e emphasized when mentioning how great the Double Helix cables sounded!!!
They are, for me, a strictly at-home listening cable.
I travel w/ my ALO Green Line, Moon Audio Silver Drago V3,
or Cardas Clear if I know I just need a 1/4".