Rocktron Utopia G100 - Manual (Page 21)

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The PREAMP function is accessible in all configurations. The preamp stage offers 4 chan-
nel choices ranging from clean to high gain for maximum sustain and distortion.
The PARAMETER SELECT knob will allow you to access these PREAMP parameters:
PREAMP Function
The CHANNEL parameter chooses one of the four (4) PREAMP types:
Clean, Texas, British, Mega.
The GAIN parameter determines the gain value in the distortion stage.
The VARIAC ADJUST parameter adjusts the level at which the preamp
stage in the UTOPIA G100 begins to distort. A Variac is a voltage attenuat-
ing device that plugs into an AC wall outlet and adjusts the voltage level to
any device which is plugged into it. For years, many guitarists have plugged
their amplifier heads into a Variac and reduced the voltage coming into the
amplifier from the AC wall outlet. This allows the amplifier tubes to reach
saturation at a lower input level and increases the gain produced. The
VARIAC ADJUST parameter operates in a similar manner as a conven-
tional Variac -- where lowering the parameter value lowers the level at which
saturation will take place.
The BASS parameter adjusts the amount of low frequency information at the
output of each preset.
The MID parameter adjusts the amount of mid frequency information at the
output of each preset.
The TREBLE parameter adjusts the amount of high frequency information at
the output of each preset.
The PRESENCE parameter also adjusts the amount of high frequency
information at the output of each preset.
The BRIGHT parameter is displayed only when channel 1 (Clean) is active,
and allows you to add extra brightness to the clean channel when switched
on.
The SCOOP parameter is displayed only when Channel 4 (MEGA) is ac-
tive, and provides a fixed scoop of the mid frequencies.
The MASTER parameter determines the overall signal level coming out of
the preamp section.
CHANNEL
GAIN
VARlAC ADJUST
BASS
MID
TREBLE
PRESENCE
BRIGHT
SCOOP
MASTER