Programming instructions

Section 6 — Effect Parameters
Edit/Effect Parameters 17
The parameters available for this algorithm are:
PREAMP GAIN Range: -48 to +48 dB
This parameter adjusts the amount of boost or cut applied to the incoming signal. We
recommend a setting of +0 dB, since these emulations were optimized for distortion there. Lower
preamp gains will result in less distortion, while higher preamp gains will yield clipping
distortion. For low preamp gain, it may be desirable to use low tube bias values.
OUTPUT LEVEL Range: 0 to 99
This parameter controls the output level of the main amp before the output EQ.
TUBE BIAS Range: 0 to 99
For preamp gains approximately 0 dB, this parameter controls the emphasis of even to odd
harmonics which determines the tone of the amp; mid values emphasize even harmonics and
offer a warmer (“glowing tube”) sound, while the highest values may sound like tubes going
bad. Tube bias and preamp gain are independent parameters. For low preamp gain, it may be
desirable to use low tube bias values, because this more closely imitates the operation of a real
amplifier.
PRE-EQ TRIM Range: -24 to +0 dB
This parameter controls the input level to the pre-amp EQ to eliminate the possibility of clipping
boosted signals.
PRE-EQ HIGH Range: 4 to 1000 Hz
This parameter filters out the low frequencies before the preamp. The higher the value, the less
low frequencies pass through.
PRE-EQ FC Range: 0 to 9999 Hz
This parameter determines the center frequency of the parametric filter before the preamp.
Higher values have a brighter sound.
PRE-EQ GAIN Range: -48 to +24 dB
This parameter adjusts the amount of boost or cut applied to the parametric filter in front of the
preamp.
PRE-EQ Q Range: 1 to 18
This parameter determines the width of the resonant peak at the parametric filter center
frequency. While the Filter center parameter determines where (at what frequency) this peak will
occur, the Q setting controls the presence of the peak.
GATE OFF Range: -96 to +0 dB
This parameter sets the lower threshold level at which the noise gate shuts off the audio.
GATE ON Range: -96 to +0 dB
This parameter sets the upper threshold level at which the noise gate passes the audio. The
higher second threshold prevents false “turn ons.”
GATE RELEASE Range: 1ms to 10.0s
This parameter sets the amount of time after the signal has elapsed for the noise gate to shut
down. For a longer sustain, set this parameter higher.
HIGH PASS FC Range: 4 to 1000 Hz
This parameter filters out the low frequencies of the main amp prior to the speaker. The higher
the value, the less low frequencies pass through.