Mechanically, this is the same horn as the Yanagisawa TW01. The meaningful difference is that this horn's body and neck are made entirely of bronze, not brass. This alloy, which Yanagisawa includes on their top-of-the-line instrument adds more depth and sonic resonance to this already superb instrument. The extra power that is felt from behind this solid bronze instrument gives the player a significant edge over his colleagues playing standard brass instruments. This horn shares the awesome sonic qualities of the TW020 but with a lesser price tag.