Thermionic Culture THE FREEBIRD 3 channel equalizer - Manual (Page 13)

The Freebird - Presence Curves
L
M
H
H+
H++
-30
-25
-20
-15
-10
-5
0
5
10
15
20
0 1 1 1 . 0 1 0 . 0
Frequency (kHz)
G
ain
(d
B
)