Mackie ProFXv3/v3+ Series, Professional Analog Mixer with USB, Onyx Mic Preamps and GigFX Effects Engine Size:30-channel a polarity reverse switch corrects

a polarity reverse switch corrects frequency cancellation and ensures both speakers play back in phase with one another

Solid spruce top and mahogany back and sides

two BNC cables that are twenty two inches long

the Airbucker magnetic field preserves high end sustain

rich-looking nickel-plated hardware

Mackie ProFXv3/v3+ Series, Professional Analog Mixer with USB, Onyx Mic Preamps and GigFX Effects Engine Size:30-channel a polarity reverse switch correctsFeatures: 6 channel Compact Mixer with Built in Effects USB Details: Product Description Mackie ProFX Series, 6 Mixer Unpowered, 6 channel (ProFX6v3) From the Manufacturer The Mackie ProFX6v3 features Onyx Mic Preamps, 192kHz 2x4 recording, 24 built in FX, and simple single knob compression with Waveform OEM software packages included. Binding: Electronics