The Elf wrote:...and please tell those of us who are still confused just how to use the thing!
If I understand correctly, in a typical stereo music application, outside the VR/surround, the signal can be decoded as any number of mono/stereo mics in any coincident configuration, pointing in any direction.
Taking a familiar scenario of a singing guitarist, you could place the mic in a suitable position, take the signals and decode them as a mono cardioid (or hyper, or fig8 or whatever you want) spot mic pointing at the guitar. You could then take another copy of the signals and decode them as another cardioid (or whatever) mic pointing at the singer's mouth. As the signal originate from the same point in space, phase issues will be minimal - you couldn't really achieve that coincidence between guitar and vocal spot mic any other way (this does of course depend on finding an optimal single position for the mic)
You can apply this to any scenario - from a single NT-SF1 you could decode a main stereo array as well as any number of mono spot mics pointing in any direction.
That's my understanding anyway, and I have to say it is appealing, especially for the singing guitarist scenario. I may well have it all wrong, of course.