I intentionally left out my notes about the BHSE because it was sourced by an Oppo and was feeding the 007 MK1 and it thought it was kind of pointless to compare the two amps when the headphones and source was difference. I didn't see if anyone tried the 009s on the BHSE, and if they did, I would have got in line :)
When I did listen to the 007 BHSE, it was out of the PICO/Ipad. I wrote:
High notes too sharp. Just listened to Norah Jones on an LCD2 and the vocals are much nicer. Everything sounds too closed in here. There are no layers. Switch to Pink Floyd Young Lust. Bass is anemic. Missing texture on the bass guitar. No strum bite, it's just a note. Percussion sounds nice though. Switch to tears in heaven, and the guitar is excellent. This track is suited toward the 007s, I like this. Switch to Brick is Red. A lot going on in this track and the 007s are fast enough, but still layers sound closed in. Bass is muffled.
Preferred the 009 and LL2 here, but given my limited experience with both stax rigs I don't know enough about the 007s vs the 009s to say what is affecting the sound.
This post really wasn't helpful, but I don't think we had the right variables involved to A/B the two amps.