The Mackie ProFX4v2 4-channel effects mixer provides a comprehensive live sound solution for singer/songwriters and other low channel count applications. Delivering unmatched sound quality, the ProFX4v2 features all-new Mackie Vita™ preamps, which are virtually noiseless and designed specifically for the highly-dynamic world of live sound. ProFX4v2 also includes the immensely powerful new ReadyFX™ effects engine, harnessing floating-point DSP to deliver 16 rich effects that elevate any performance. A no-compromise live sound toolkit includes a room-shaping GEQ and flexible I/O for professional applications. With a rugged steel chassis and unmatched sonic performance, ProFX4v2 is truly the life of your live mix.