█ EQ control
The Vidur comes with an active baxandall type tone control (EQ). It can either cut
(counterclockwise) or boost (clockwise) the chosen frequency range.
freq
: The
‘freq’
knob, short for frequency, selects the center frequency preferred for the mid
control.
The EQ works in the following ranges:
●
low
: low cut/boost @ 80Hz. +/- 9dB, shelving
●
mid
: band cut/pass @ 200, 350, 550 or 800 Hz. +/- 10dB
●
high
: high cut/boost @ 1,2 kHz +/- 9 dB, shelving
Note: The EQ setting is completely independent of the selectable sound signature.
█ EQ button
The EQ button has two functions:
1. Pressing and releasing the EQ button enables/disables the EQ section. When
disabled, the EQ is completely removed from the audiopath by means of a true
bypass. Signal level remains the same and the sound is comparable to when all EQ
controls are centered. This button is also available on the optional footswitch.
● red:
EQ disabled
● green: EQ enabled
2. When the mute button is pressed and held for two seconds, the EQ button LED will
show the current state of the selectable sound signature. Pressing the EQ button will
change the state.
● red blinking:
filter disabled
● green blinking: filter enabled
Note: The EQ state is completely independent of the selectable sound signature.
█ Master
The master will control the signal level to the main outputs. Tuner output, fx loop and line out
are not influenced in any way.
deBont Amps Vidur Tube Preamplifier Owner’s Manual
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