The Sound and Support You Need Sweetwater’s percussionists are raving about the sound and settings of the Quantum Mark II Bass Drum from Mapex. If you’re a marching percussionist, then you know that compromising on comfort and sound is out of the question — that’s where the Quantum Mark II comes in! The all-maple construction and premium appointments like SONIClear bearing edges and precision air vents prioritize tonal quality and projection, while the highly adjustable eyebolt system allows every drummer to feel confident when out in formation. Available in a stunning assortment of sizes, these bass drums are ready to conquer the challenges of marching performances at all levels!Superb tone and ease of use Each Quantum Mark II Bass Drum shell is constructed from six plies of maple for a classic and warm thundering boom with every strike. Mapex’s iconic SONIClear bearing edges aid in the warmth of this drum’s