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8 BLOCKS GUIDE
ADVANCED PAGE: CATHODE FOLLOWER SECTION
Cathode Follower Compression
— Duplicated control from the Preamp page.
Cathode Follower Harmonics
— Simulates harmonics that occur naturally inside an amp as tubes interact.
Higher values increase the interaction between virtual tubes, yielding “softer” distortion.
Cathode Follower Type
— Selects between “AUTHENTIC” and “IDEAL” types.
Cathode Follower Time
,
Cathode Follower Ratio
— These parameters determine the attack time and ratio
used for Cathode Follower Compression.
Cathode Follower Hardness
— The Axe-Fx III models the tubes driving cathode followers. In models that use
cathode followers, hardness adjust the shape, warmth, smoothness and decay of CF distortion.
ADVANCED PAGE: POWER AMP SECTION
Master Vol Trim
— Allows you to adjust the range of Master Volume. Increasing the value above 1.0 will cause
more gain in the virtual power amp and vice versa.
Master Vol Cap
— Sets the value of the bright cap across the Master Volume control.
Master Vol Location
— Sets the location of the Master Volume control. Most amps have the Master Volume
before the phase inverter (“Pre PI”). On some amps (like the “Class-A” types) the Master Volume comes after the
phase inverter (“PI”). A third option, “pre-triode,” is the default for “Hipower” amp types.
Presence Freq
— This multiplier alters the center frequency of the Presence and Dynamic Presence controls.
Depth Freq
— This multiplier alters the center frequency of the Depth and Dynamic Depth controls.
P .A . Cathode Resonance
— There are two types of power tube bias: fixed bias and cathode bias. In a cathode
biased amp a resistor is placed between the power tube cathode and ground thereby self-biasing the tube. This
parameter sets the value of the virtual cathode resistor. Higher values result in a more negative bias and push
operation towards Class-B, resulting in more crossover distortion.
P .A . Cathode Time Const
— This sets the time constant of the virtual RC cathode network for amp types that
are cathode biased.
Dynamic Damping
— Controls the reduction in plate impedance as a function of grid voltage. Higher values
result in a more focused and forward midrange.
PI Bias Excursion
— Controls how much the virtual phase inverter bias shifts when overdriven.
Pwr Tube Bias Excursion
— Controls how much the grid bias shifts when the virtual power tube grids are
overdriven.
Excursion Time
,
Recovery Time
— These parameters are related to Pwr Tube Bias Excursion. They control how
rapidly the coupling capacitor charges or bleeds off as the virtual power tube grids are conducting or not.
ADVANCED PAGE: OUTPUT SECTION
The Amp block has Level, Balance, Bypass, and Bypass Mode parameters.
See
“Common Mix/Level Parameters” on p. 55
.
