
Front Panel Functions
INPUT JACK - High impedance input to the amplifier. Plug in your instrument here.
TREBLE - Adjusts the high frequency response. At lower settings of this control the tone will be
warmer and smoother. As you turn this control up the highs become more prominent and
aggressive adding gain to the signal as well. This control is very interactive with the Bright switch,
Middle control, and Deep switch. In the full counter-clockwise position, high frequencies are
bypassed to ground. In the full clockwise position, high frequencies are allowed to pass to the next
gain stage.
MIDDLE - Adjusts the midrange response. At low settings of this control the tone will be “scooped”
of midrange response, emphasizing the highs and lows. As this control is turned up, the midrange
frequencies are increased. This creates the “body” of your guitar’s tone and is very critical to both
the tonality, feel and overall response of the amplifier. Higher settings of this control also help your
tone to cut through the mix in both a live band situation as well as when playing the amp outdoors.
In the full clockwise position, mid-range frequencies are allowed to pass to the next gain stage.
BASS - Adjusts the bass response. In the full counter-clockwise position, low frequencies are cut
and the response of the treble and mid-range controls is greatly reduced. As this control is turned
up, the bass frequencies are increased and allowed to pass to the next gain stage.
REVERB SEND - The reverb send control determines the amount of signal applied to the reverb
tank. Low settings will create short decay times. Advancing the control clockwise increases the
signal applied to the tank for longer decay times. Use this control in conjunction with the Reverb
Return control.
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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. Use this return control in
conjunction with the Reverb Send control to create a wide range of natural reverb effects.
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.