The Rane MP 2016a is a rotary-controlled audio DJ mixer with 6 input channels. It also has booth and house outputs, pre-effects tape outputs, post-effects tape outputs with level control, switchable effects loop, and headphone cueing. The Rane mixer"s input channels 1 through 4 feature high quality RIAA phono preamplifiers which may be switched to line input via rear panel switches. Input channels 5 and 6 each provide a balanced mic preamp with input gain trim, mic/line switch, two-band EQ, mic engage switch and an internal booth ducking enable jumper. In addition to the six dedicated preamplifiers, all 6 input channels on the Rane MP 2016a rack mixer may select any of the five stereo auxiliary inputs. Each input channel on the Rane DJ mixer provides a 6-position source selector, input gain control for matching levels, signal/overload indicators and a studio-grade master mix control. The booth output may select master or cue as its source. An ultra-low noise, high power headphone amplifier also allows monitoring the master mix or cue mix. Rane"s MP 2016a improves on the original MP 2016 by adding split cue. Individual cue switches on each channel drive a panning master/cue control for the headphone output. The master mix circuit provides signal/overload indicators, mono switch and high-pass/rumble filters. In addition, the master output features patent-pending, high-performance 3-band, full-cut, accelerated-slope tone controls. The MP 2016a provides exceptional ergonomics, good feel and a clean, intuitive layout packaged in a compact 19", 3U rackmount chassis, a scant 5" deep. So you say,"Great, but to accommodate the diverse needs of all DJ mixing styles, I need dedicated high performance three-band, full-cut, Accelerated-Slope tone controls for each of the six Input Channels, high-performance Active-Crossfader with full range contour control, A-Post-B crossfader assign switches and a stereo, 10-segment, peak dBu Master/Cue meter with peak hold; all without effecting the ergonomics of my classic rotary mixer." Rane has you covered! With the flip of a switch on the MP 2016a front panel, you can engage the DJ mixer"s optional XP 2016a External Processor and acquire all of these features.Split cueing Six stereo Input channels 4 dedicated stereo Phono/Line preamps 2 dedicated Mic/Line preamps with: Gain trims 2-band tone controls Engage switches Booth ducking Five stereo auxiliary inputs Input gain controls for level matching Switchable effects loop Booth output with Master/cue source switch Separate pre- and post-effects tape outputs Master accelerated-slope, full-cut, 3-band tone controls Audiophile/studio sound quality Highest quality Alps potentiometers High power headphone amplifier