The ART 355 Dual Channel 31-Band EQ boasts a rugged, all-steel chassis that occupies 2U rackspace and fits standard 19" racks. The 335 has a long list of impressive features that includes constant Q circuitry, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, balanced XLR and 1/4" and unbalanced RCA input and output connections, adjustable high-pass and low-pass filters, variable input level controls, signal clip level indicators, ground lift switch, internal power supply, and selectable line voltage switch.