46
Doc Q7.0
Amp Advanced Page (“ADV”)
5.1.8
INPUT SELECT
– The AMP block processes audio in mono. This control determines how incoming stereo
signals will be processed. You can input only LEFT or RIGHT channels, or SUM L+R (the default setting).
MODELING VERSION
–
(XL/XL+ ONLY!)
Selects which version of Quantum modeling the currently
selected Amp block will use. (See also “Force Default Version” in the Global Config menu on p. 145.)
BOOST
–
Toggles an additional 12 dB of gain at the input of the amp block.
INPUT TRIM
– Allows you to adjust the relative gain of the preamp. Increasing the value will cause the amp
to have (more or less) gain. It is simply a linear gain applied at the input to the block. You can use it to give a
typically clean amp a bit more oomph or decrease the gain of a very high-gain amp. Note that this is different
than the Input Drive control because the Drive control interacts with the surrounding circuitry and changes
the frequency response as it is varied.
MSTR VOL TRIM
– Allows you to adjust the range of the
MASTER
. Increasing this value above 1.0 will cause
more gain in the virtual power amp, while values below 1.0 will result in less gain.
MSTR VOL CAP
– (“Master Volume Capacitor”) sets the value of the bright cap across the Master Volume.
MSTR VOLUME LOCATION
– (“Master Volume Location”) – Sets the location of the Master Volume. Most
amps have the Master Volume before the phase inverter (“Pre PI”). On some amps (like the “Class-A” types)
the Master Volume is after the phase inverter (“PI”). A third option, “pre-triode,” is the default for amp types
based on Hiwatt® models.
BRIGHT
–
This switches appears on the PRE page, but is offered here with a
modifier
option.
BRIGHT CAP
– Sets the value of a virtual capacitor to determine the sonic effect of the
BRIGHT
switch
(above). Increasing this will make the preamp brighter and vice versa.
SAT SWITCH
– The Saturation Switch engages a popular “mod” between the preamp and the tonestack for a
thicker, more aggressive distortion character. The “
ON (AUTHENTIC)
” and “
ON (IDEAL)
” settings differ only in
volume. “IDEAL” gives you the hotter output you wish a real amp had with saturation engaged ;-)
SAT DRIVE
– Controls the amount of
SAT SWITCH
saturation. The default value differs for each model.
LOW-CUT FREQ
– This control allows you to reduce the amount of low-frequency content at the input to
the amp simulator. This parameter defaults to a value for each type but can be overridden if desired.
HIGH-CUT FREQ
– This control sets the cutoff frequency of a low-pass filter at the very end of the preamp
simulation. It defaults to a preset value for each amp type but can be overridden if desired. Experiment with
this to fine-tune your tone. For example, some of the higher-gain amp types are characterized by fairly heavy
filtering after the preamp stage. Increase or decrease for a brighter or darker tone.
DYNAMIC DAMPING
– The Axe-Fx virtual power amp models the plate impedance of the power tubes.
They give tight bass and warm highs at higher
MASTER
settings, with “3-dimensional” tone. The plate
characteristics are adjustable via the Dynamic Damping parameter. The value of this control is changed
automatically when you set the
TUBE TYPE
parameter on the PWR page.
DEFINITION
– This control is a basic “tilt EQ” which adds highs/cuts lows, or vice versa. It is located at the
amp input, so its effect is heard before preamp distortion or a front-end tone stack.
