The advantage of the ion tweeter is absence of any type of mass moving mechanism need to produce sound. The ion speaker takes advantage of the corona discharge effect to produce sound. The corona discharge effect produces sound much the same way as nature produces sound through electricity. Imagine a lightning bolt traversing trough the air,such as the figure at the left. The lighting bolt suddenly heats the air causing it to expand. This expansion creates variations in the surrounding air pressure and creates sound as thunder. The corona works the same way. A high voltage causes the dielectric breakdown of the air and produces an electric flame. By modulating the corona, sound is produced. This is an ideal situation since no mass is moved to produce the sound. It is emitted by the corona itself. The lack of mass movement not only improves the transient response drastically, but it provides an omni directional point source to emit sound. The conventional speaker is unidirectional. In other words, the transfer function of the air channel changes as you move away from axis of sound. With an omni direction point source, the transfer function of the channel is the same 360 degrees around. No matter where you stand in relation to the speaker, it will deliver the same clean crisp sound.