The Klark-Teknik DN410 is a dual channel, 2 x 5 band parametric equalizer offering 15dB of boost or 25dB of cut at any frequency between 20Hz-20kHz, and variable filter bandwidths from less than 1/12 octave to in excess of 2 octaves. In the expanded ‘single’ mode, all IO parametric filters are placed into channel A.