Battle of the Closed Back Giants:
A miracle happened and I got the possibility to get a Stax 4070 of the last series with improved headband adjustment in best condition.
Maybe 200 pieces were built. Many of them already ruined in recording studios. In such a top condition and still original with the first cushions there is perhaps still a handful in the world and to get these a difficult undertaking as I had to determine myself.
You also have to be careful with the 4070, that possibly changed pads, which fit on the fabric side (all Lambda pads fit) on the 4070, but the template headphone side for the double-sided tape just does not fit. This must be cut to size, otherwise it will cover some areas and the headphones will sound much worse.
The 4070 plays in contrast to the 009 meatier with more bass. A Lambda but with bass.

A 007 is warmer with even more bass and further the king of Stax.
The isolation is on Stellia level with even less leakage to the outside. It sounds amazingly open with an impressive three-dimensionality for a closed and tidy fundamental as well as bass.
With classical music, however, no other of my headphones except the Mysphere has a chance against the 4070 - that's already clear. Terrific! Jazz fabulous! Metal, that's fun with punchy bass!
I now had all closed headphones except the R10. Stellia and 4070 are clearly the locking tips of the closed series!