10
PreSonus BlueTube DP V2
3 Hardware
3.1
Front-Panel Layout
Tube Drive.
Tube Drive controls volume being routed
through the 12AX7 vacuum tube, unlike the Input Gain
which controls the overall volume. The effect achieved
ranges from subtle to extreme, depending on the
setting being used. The more signal being sent to the
tube, the more distortion you will hear. While you won’t
always want to use tube drive, it can be a great choice
for guitar, bass, and even vocals.
Using tube drive with the output gain can
create some very desirable effects:
•
Warming up the sound.
This is achieved by adding
a small amount of tube drive (30% or less). It is
especially desirable for vocals and electric bass.
The resulting sound is richer and sweeter.
•
Overdriven tube sound.
This effect is achieved
by adding 30 to 100% tube drive. The more
tube drive you add, the more overdriven the
sound will be. This sound is extremely useful
for creating distorted guitar, and it’s great for
an authentic “blues harp” harmonica sound.
When the Tube Drive knob is turned fully
counter-clockwise, it will click. This switches
the preamp to the solid-state gain stage.
Clip LED.
The Clip LED will illuminate if your input signal
e20 dBu. Clipping the input produces very
unpleasant distortion. If you want good-sounding
distortion, increase the tube drive control while
lowering the output gain.
Input Gain Control.
This knobs provide the following
gain structure:
•
XLR Microphone.
80 dB of variable
gain (-15 dB to +65 dB)
•
Instrument/High-Impedance Input.
80
dB of variable gain (-30 dB to +50 dB)
