iBasso DX220 - Low Pass Filter; Parametric Equalizer Setting Instruction

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Central Frequency (Fc):
The central frequency of each filter setting.
Gain:
The gain for the central frequency.
Quality Factor:
The range of effect of the filter.
As shown on the pictures below, the larger value of the
Q factor, the smaller the effect compared the central
frequency. The smaller value of the Q factor, the larger
the effect in relation to the central frequency.
The following are the curves of the filters
(Fc=100Hz, gain=4dB)
Parametric Equalizer Setting Instruction:
1. Low Pass Filter
The frequency higher than the central frequency will be affected.
Gain setting is ineffective with low pass filter.
2 3 4 56 10 20 30 100 200 1k
①. Q=0.7071 ②. Q=20
4 5 6 78 9 10 20 30 40 50 100 200 300 1k