Mastering Equalizer This is a unique equalizer – for several reasons. It has two times five fully parametric filter bands, each of which can be switched between constant Q and proportional Q! And there’s sheer unlimited headroom and a very special kind of EQ sound – thanks to 120V technology.Stepped PotentiometersRecall of all settings is easy thanks to the potentiometers with 41 steps.Cut/Boost & 1/4 GainEach filter band can be boosted or cut up to 20 dB.If only minimal changes are required, the 1/4 Gain switch can be used to reduce the boost or cut range from +/-20 dB to +/-5 dB.FrequenciesWe have designed the frequency distribution to overlap widely between the bands, so that problematic frequencies can also be addressed with two bands. LF: 10 Hz – 330 Hz LMF: 33 Hz – 1 kHz MF: 128 Hz – 4.1 kHz MHF: 310 Hz – 10.2 kHz HF: 760 Hz – 24 kHz