The Phonic GEQ1500 are powerful two-channel graphic equalizers and one of the best solutions for room compensation, feedback reduction, and vocal and instrument enhancement. Precision center detented controls allow users to adjust the 15 (1500) frequency bands on each channel, with a useful switch swapping the range between ±6 and ±12 dB, allowing fine adjustments of the entire audio spectrum. The useful low cut filter quickly and effectively eliminates unwanted elements like stage rumble and low frequency interference.