Apogee Acoustics Synergy 1.5

[E-Stat]

But just like regular planars, they need huge surface area to make any bass and dynamic headroom. A E-Stat in the size of the Apogee Duetta, Scintilla or new Synergy wont have the resolution, bass and dynamics.

Output with a similarly smaller array, no. Resolution yes. There is a reason that ALL high end microphones are condenser (electrostatic).

Once you go higher, the gap closes.

Indeed. It's all about radiating area. The U-1s have significantly more than the Synergy, not to mention the Majestics which are simply huge.

rw