Treble Control; Bass Control - Mesa/Boogie QUAD PRE-AMP Owner Operating Instructions

lead mode. By raising the frequency of the shift, the higher frequencies have a "soaring" feeling
unequaled in any other guitar amp. Higher strings, when bending, seem to reach for the stars with
purity and focus. The Treble Shift in Channel 2 is manually operated and has no automatic bypass
function. This design was chosen so a player can apply the shift when using Rhythm 2 for a
Crunch Rhythm or Lead Sound, and bypass it when the mode is dialed up for-a clean sound. Most
players will prefer Channel 2's Treble Shift bypassed (pushed in), when using Rhythm 2 for a clean
sound.

TREBLE CONTROL

RECOMMENDED SETTING:
BASS: This is a wide-ranging control and is very easy to use. It tends to become the dominant
tone control when low settings on the Treble Control are used, and more of a "coloring" control at
high Treble settings. It should be set with both modes in mind. High settings will produce a round
warm clean sound in the Rhythm modes but possibly add "low end flab" to the lead modes.
Likewise, an extremely low setting of the bass control can leave you with a "flat", two-dimensional
sound.
BASS SHIFT: This pull function can be very useful and important. Another name for it could be
"Breath Control" or "Pull 3-DII. In the Rhythm modes it truly does add "breath" to an already
"breathing" tube amplifier.
By lowering the frequency of the bass control and boosting it slightly, warmth unequaled by any
other feature appears. Single coil pick-ups benefit most from its action, becoming elastic and full of
body, while humbucking pickups produce the realistic, almost "acoustic" bottom end found in a fine
flat top guitar. If warm clean sounds are your forte, the Bass Shift is your campfire. In the Lead
Modes this same accentuation can prove invaluable in moving the air needed to obtain the huge
"chunking" low end often needed in today's music. By pulling this control and dialing in the bass
slowly, you will find the perfect setting. Blending this with the Middle control's Pull Deep and the
Graphic EQ, you'll find that hugh low end you've always dreamed of. Fellow bandmembers will
swear Godzilla is coming down the street. This control also has a subtle effect on the higher
frequencies. A "voice" like quality will appear on higher strings with this control pulled. Experiment
with this control. Two very different "feels" can be obtained. Pulled and set lower (3 and below) a
warm "spread out" feel is obvious. Pushed in and set higher, a tighter "flutier" feel is apparent. This
can be more articulate and focused for hammering or two-handed styles. Also, used this way less
"pick noise" is heard and would be better for fast picking styles.

BASS CONTROL

RECOMMENDED SETTING:
MIDDLE: This control is the least significant and easiest to use of the three tone controls. Like the
Bass, its effectiveness will be decreased by high settings of the Treble control and increased by a
low setting thereof. Although its action may not seem dramatic, it does add midrange warmth when
used with normal settings of the Treble and Bass Controls.
Channel 1 = 6, pulled optional
Channel 2 = 8, pulled optional
Channel 1: 3 pulled optional
Channel 2: 5 pushed optional
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