Piano Lacquer----Painting with three layer of piano lacquer to make it much more appealing and durable too. Nice gold-plated copper binding post----with great performance of touch-points, and can prevent oxidation too.
Foot shock nail----to avoid the resonance between the speakers and the desktop holding the speakers, which can make the speakers perform better. And the sound comes out of them would be much clearer, cleaner and more powerful too.
Adopting long magnetic gap and short voice coil tech----to make frequency response much more smoothly and reduce distortion too.
Applying BENNIC components in building the sound regulator----to make the timbre of X3 much mellower and warmer.