This is a slightly used Marco Bass Guitar Single-Cut 5 string. I recently purchased it at the 2013 NAMM show and it is 1 of 2 ever made special for the show. The top of the bass is curly maple and the back is Black walnut. The neck is Tiger Wood and the fingerboard is Maple. Marco does all of his own electronics along with wood work. This bass plays beautifully and is just as hot in passive mode as in active.