The Tone Control of the Chandler EQ uses active AND passive EQ circuits in combination with the GERMANIUM amplifier developed for the GERMANIUM Pre and incorporates the versatile Feedback and Drive controls as well. All bands use inductors for the fattest smoothest tone possible. The passive low frequency section is selectable between “Pultec/Lang” interactive curves and more standard low frequency with pass filter for maximum flexibility while the Treble and Presence bands are active and designed to sound like your favorite British eqs from yesteryear.