Mackie VLZ4 featuring Mackie?s flagship Onyx mic preamps is the original no-nonsense mixer series. The comprehensive VLZ4 line delivers the proven feature set high-headroom/low-noise design and ?Built-Like-A-Tank? construction that created an industry more than 20 years ago. From every input to every output VLZ4 is optimized to deliver professional-quality results each and every time.