Majestic Gateway mallet instruments provide a modular system that makes real performance quality instruments accessible to young percussionists. Features including wide graduated bars, extended range, & full resonators on select models facilitate meaningful practice of all mallet techniques. Optional bag sets & lightweight frames accommodate manageable transport.The M5533D marimba offers a 3.3 octave range and full-sized bars for realistic practice. Optional resonators can be added later to enhance the instrument sound. Features: Padauk bars provide warm sound that makes practice enjoyable Lightweight aluminum frame facilitates ease of transport Optional resonators can be added for concert quality sound