VOX Amplification VT20X Manuel D'utilisation page 6

USB port
Use this port and a commercially available USB cable to
connect your amplifier to a computer, etc.
e . EFFECTS section
Effect selection buttons (PEDAL1, PEDAL2 and REVERB)
Effect type LEDs
Use these buttons to adjust the effects and choose
an effect type. The selected button will begin
blinking to indicate that it has been chosen to be
edited. Use the TAP button and VALUE 1 and
VALUE 2 knobs to adjust the selected effect.
Press any effect selection button while it is
blinking to select an effect type.
An effect type LED will illuminate to indicate
your selection. Hold down an effect selection
button to turn it off and turn off the effects.
When the tuner function is engaged the effect selection buttons will display the
tuning status ("Using the tuner" on page 9).
The buttons for effects not being used will turn off.
Tip
More detailed adjustments can be made to effects by using Editor/
Tip
Librarian software.
TAP button
This sets the modulation speed and delay time for
effects. The interval between two presses of the TAP
button will be set as the speed/time. The TAP button
will blink according to the specified speed/time.
To set a precise speed/time that matches the tempo of a song, press
Tip
the TAP button several times along with the beat of the song.
Hold down the TAP button for at least one second to bypass all effects
and engage tuner function ("Using the tuner" on page 9).
Effect selection bu ons
Effect type LEDs
- 6 -
VALUE 1 and VALUE 2 knobs
These adjust the parameters of the effects.
When the tuner function is engaged, the VALUE 1
knob adjusts the noise reduction.
The available parameters differ depending on
the effect ("About the amp models and effect types" on page 10).
Using Editor/Librarian software, more detailed adjustments can be
Tip
made to the tone.
f . Power button
Hold down this button to turn the VT20X/VT40X on or off.
g . AUX IN jack
Connect the analog output of an audio device to this jack.
You can connect an audio player to this jack, then play
along on your guitar while listening to your favorite songs.
Adjust the volume for the headphones jack with the connected device.
h . Headphones jack
Use this jack if you want to output directly to a mixer or
recording device, or when you want to use headphones. The
signal that is output from this jack is taken from directly before
the power amp, and the cabinet response of the guitar amp is applied to it.
When a device is connected to this jack, no sound will be output
from the internal speaker.
Be sure to connect a stereo plug to this jack.
i . Tubes/Valves section
When the amp model is changed, the parameters in the valve section
Tip
are returned to the standard settings for each amp.
BIAS SHIFT button
This adjusts the bias for the tubes. When the operating
point of the tube is changed the character of the distortion
will change. Each press of the BIAS SHIFT button switches
it in the following order: off -> green -> red.