The dbx 3231L Graphic Equalizer is a high-performance multifunctional unit designed to deliver all the flexibility and power that professional users demand. Featuring long throw precision sliders, switchable high- and low-pass filters, balanced / unbalanced connectors, and ultra low-noise performance, the 3231L is more than equal to any critical audio task requirements. The 3231L offers 31 ISO standard center, 1/3 octave constant Q frequency bands in a single package. Selectable 6 or 12 dB of boost/cut gives the user superior signal processing control, while the use of low tolerance components yields accurate frequency centers. The unit also includes a passive bypass system that completely removes the equalizer from the audio path when power is off. Also included is an active bypass that allows comparison of the equalized signal with the original.