general impressions from my limited time with them.
009's are very neutral in their presentation and that is a very good thing in this case. Nothing was out of place. They were able to handle very complex and powerful passages very well. A giant killer for many systems (RCA-SACD 4th movement - Saint-Saens - Symphony No. 3 In C Minor Op. 78 'Organ'), the 009's from my ES-1 was able to hold everything together - soundstage, detail, bass, air, and power. Was a pleasure to listen to. The only thing that was lower than what I wanted was impact, à la L3000's... but that is a different animal.
I used two tracks for resolution and went against the 4070's.. Nickle Creek - 2002 - This Side - track 3 - "Speak", and track one of Dave Brubeck - 1959 - Time Out - "Blue Rondo à la Turk" both from SACD. As Al says, The 009's have higher resolution. They are very close to the 4070's, which I always considered the resolution king, but the nod would have to go to 009's for me. They both demonstrated the eerie 'notes dissipating into the ether' effect.
The closest can to the 009 is the Omega. Presentation is very close. But the resolution on the 009's are higher and the bass presentation is tighter on the 009's. But it is a worthy Omega alternative in my view. I found the Omega to be a little more midrange forward than the 009's.
009's vs 007's... The only edge that I have for the 007's is they had more impact for me. The notes had more weight, the bass I could feel more. But just about all other aspects the 009's edged it out.
I had to stop myself from wanting to compare the ES-1 to Al's BHse (I get distracted every now and then)...
Side note - all tracks were 'very' well recorded. Did not listen to a run of the mill recording to see if the 009's were forgiving, I don't really want them to be.
Cheers,