Markbass has worked long and hard to design a state-of-the-art direct box that fully meets the needs of professional sound engineers. Phase distortion and harmonic distortion are most prevalent at lower frequencies, but through the Super Pro DI Box, the sound comes through clearly with smooth, transparent low end. Designed for active basses, this passive DI is optimized to give full, rich, linear sound at all frequencies, handling extreme transients without introducing any distortion or coloration. No matter what type of signal you use it for, this DI always sounds full and natural!