The Mackie Quad EQ employs 4 - 30-band graphic, Adaptive-Q Equalizers to provide equalization <## HC plus mn ##>12dB using 30 individual EQ filters, without the ripple and boosting effects found on traditional (Constant-Q) units. These Adaptive-Q filters and super-accurate LED display ladders paint a highly detailed picture of the Quad EQ's effect on the output signal. In other words, what you see in the display is what you get.<BR><BR>Of course, if you're the type of person that likes to measure and analyze, you'd really want to get a mic and an RTA unit. For the first time, sound-pressure level (SPL) and SMAART real-time analyzer (RTA) meters are no longer expensive add-ons, but part of a fully integrated, user-friendly package. The Quad EQ includes an SIA reference mic, as well as a dedicated reference mic input. Once plugged in, SPL can be displayed via a bright 3-digit display in the upper right corner. Or simply press the mic button and the RTA will display what's going on in the room, on the same ultrabright ladders as the EQ filters. In this way, you can simultaneously view your EQ settings versus what the results are. And RTA data is post EQ, so if you encounter feedback, you can quickly see it, cut it, and view the results. <BR><BR>Mackie also added some features live sound folks will really appreciate: 99 user snapshots to store and recall your EQ settings; a built-in pink noise generator; variable hi and low pass filters with multiple slopes on all 4 channels; stereo linking of channels A/B and C/D; high-quality TRS and XLR input/output, and a Planet Earth power supply for use anywhere between 100 and 240V.<BR><BR>People are really attracted to sound engineers who know how to operate equipment with lots of flashing lights, so the Quad EQ was especially designed with plenty of lights. (Heh!)
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