MASTER - Adjusts the overall output level of the amplifier. At lower settings on this control the
amp will be much cleaner sounding as well as lower in volume. As this control is turned up the
power section of the amp begins to work harder which increases sustain, fullness, and touch
dynamics as well as increasing the volume of the amplifier. At higher settings on this control the
power section will be pushed into natural overdrive especially if the Gain control is set higher.
REVERB SEND - This reverb “drive” control determines the amount of signal applied to the reverb
tank. Low settings will create a very open, small room reverb effect with a short decay time.
Turning the control clockwise increases the signal applied to the reverb driver stage creating a
very saturated effect with a sharp attack and a longer decay.
REVERB RETURN - This is the reverb return control which mixes the reverb effect signal with the
dry signal. At full counterclockwise rotation, the reverb effect is defeated. Using this return control
in conjunction with the reverb drive control on the rear panel, a wide range of natural reverb effects
can be produced.
CONTOUR - The contour control is an active wide band sweep. In the 12 o’clock position, the
amp’s frequency response is flat. Counterclockwise rotation reduces high end response and
increases low frequencies. Clockwise rotation decreases low end and increases the high
frequency response. This control is very useful for maintaining preamp tone control settings, while
allowing a global adjustment to compensate for differences in room acoustics, speaker cabinets,
or bright to dark guitars (single coils to humbuckers, for example). This control also actively
reduces the articulation available, allowing a softer setting, or extremely open and revealing,
depending on your individual style and requirements.
STANDBY - This switch should be in the down/STANDBY position before you place the Power
switch to the up/ON position. After 20 seconds or more, place the Standby switch in the “up”
position to play the amplifier. When you are taking a break from playing the amp you can leave the
amp “powered up” and simply switch to the “stand-by” position to mute the output of the amplifier
and prolong power tube life.
INDICATOR LAMP - This lamp will illuminate when the rear panel power switch is in the “up”
position, indicating the unit is receiving A/C power.
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