Dennis Wick's heavy top mouthpiece uses a completely different principle in order to prevent the trumpet's vibration from feeding back to the player, transmitting all the energy through the bell.  This gives a much more powerful sound when needed, more security in the high register and more control and focus in all registers.  With the large-bore C trumpet in mind, this model is more brilliant than the 1 and 1X, and manages effortlessly to dominate the modern symphonic brass section.