The main pro I would say is the very low distortion with their air-damped diaphragm. They have a high resolution and high articulation that gives a crystalline, yet fatigue-free sound. The other pro is that as a line source, one can sit very far away with little degradation in sound. Their main problem is the very limited excursion creates with "thwap" effect and they have a limited dynamics. Their dispersion can be considered good and bad. While have keep and even power throughout a room, lateral dispersion can not be so great localizing the sound to the speaker. That can depend on the model. Front wall distance is important. I have heard a set up that caused a mid bass bump because the speakers were too close.
I would encourage anybody really to hear Soundlabs. They are the best example of electrostatics, imo. Stax SR-009 headphones are also a great experience.
I would encourage anybody really to hear Soundlabs. They are the best example of electrostatics, imo. Stax SR-009 headphones are also a great experience.