The DDD driver mounted vertically possesses an added advantage that is arguably just as great as the unrivalled linearity of the design itself. That is, it is a nearly ideal point source with an omni directional radiation pattern.

The DDD driver propagates sound in a uniform spherical pattern. The frequency and phase responses are uniform from all listening angles, which is never the case with multi-way cone and dome loudspeakers, nor with dipole electrostatics or ribbons.

An omni directional radiator has several audible advantages:

The window in which stereo imaging will be perceived is considerably widened, and “head in a vice” listening constraints are much relaxed.
The loudspeaker’s behaviour tends to be much more predictable from room to room, because the reflected sound is timbrally matched to that of the direct sound.
The sound of an omni directional loudspeaker has decay characteristics more closely resembling large room reverberation than is the case with the narrowly focused output of typical monopole direct radiators. The sound has a naturalness about it that powerfully suggests the experience of a live musical performance.

It is possible to approach such a radiation pattern with arrays of conventional drivers and certain types of diffusers and horns, but only the DDD driver achieves perfect omni directionality at all frequencies and at no penalty. Yet another unique attribute of the world’s most nearly perfect loudspeaker.