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Koss Pro4S

Koss Pro4S

See usage instructions for more options and info.

Parametric EQs

You can use filters 1-5 or 1-10. Apply preamp of -6.4 dB or -6.5 dB, respectively.

# Type Fc (Hz) Q Gain (dB)
1 LowShelf 105 0.7 3.2
2 Peaking 68 1.04 -4.7
3 Peaking 1013 0.93 -2.4
4 Peaking 3113 1.91 -10.1
5 Peaking 6174 0.54 7.3
6 Peaking 106 2.89 -1.1
7 Peaking 246 3.33 3.7
8 Peaking 3712 6 -2
9 Peaking 4561 5.47 2.6
10 HighShelf 10000 0.7 0.7

Fixed Band EQs

When using fixed band (also called graphic) equalizer, apply preamp of -7.6 dB (if available) and set gains manually with these parameters.

# Type Fc (Hz) Q Gain (dB)
1 Peaking 31 1.41 3.2
2 Peaking 62 1.41 -2.3
3 Peaking 125 1.41 -1.4
4 Peaking 250 1.41 3
5 Peaking 500 1.41 -2.2
6 Peaking 1000 1.41 -0.9
7 Peaking 2000 1.41 -2.9
8 Peaking 4000 1.41 -1.1
9 Peaking 8000 1.41 7.6
10 Peaking 16000 1.41 2

Graphs