Xotic AC-Booster Owner`s Manual

Owners Manual

Congratulations on purchasing the NEW Xotic Custom Shop AC-COMP!! The AC-COMP features improved tonal

characteristics that have been modified for tighter, yet smooth overdrive sound. With three compression modes and

internal dip switches, you can choose your level of compression, tonal character and make subtle adjustments to

treble and presence levels.

On/Off status led

Gain control knob

Volume knob

Comp mode switch

Output Jack

On/Off switch
(True Bypass)

DC Jack

2.1mm x 5.5mm
9VDC
negative center

When an external power
supply is used,the battery
is disconnected from the
circuit.

Remove four screws from
the bottom plate to access
battery.

XOTIC EFFECTS USA

14920 Calvert Street

Van Nuys, CA 91411 USA

E-mail: [e-mail]

Two Band EQ

Input Jack
(nominal input -20db)
Unplug when it’s not
in use for a longer
battery life.

comp

Specs:

Dimensions (W/D/H): 4.39" x 2.38" x 1.98"

(110mm X 60mm X 50mm)

Weight: 0.6 lbs. (270g)

True Bypass Switching

Power Consumption: 9VDC/10mA (max)

Approx. 50hrs continuous use with alkaline battery

Battery Type: 9VDC (006P) x 1

AC Adapter (Optional): 9VDC

Negative Tips (Regulated recommended)

Boss PSA, Ibanez AC109 etc

Input Impedance: 500K ohm

Output Impedance: 2K ohm

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Owners Manual

Comp mode switch settings

normal (up)

comp off (middle)

comp on (down)

Normal mode: This mode offers a well balanced tonal response that’s optimized for rhythm and lead sounds.
It retains perfect string articulation providing distinctive smooth sustain.

Comp off mode: The middle position provides the most open and non-compressed tonal qualities.
Voiced for a clean/crunch sound with slightly more mid range, complexity and minimal coloration.

Comp on mode: In the down position, this mode offers additional compression, clarity and tightness ideal
for highly saturated tones. Please note this mode may be quieter than the up and middle modes.

Treble and Bass Control Range

+15db

90hz

1.5khz

500hz

-15db

10khz

Pre-EQ Treble/Presence Control
Internal DIP switch settings

default settings

ON

1 2

default settings: boost off (flat)
presence boost : above 4.8khz
treble boost : above 2.4khz
treble boost : above 1.5khz

Sample settings

Violin-like moderate overdrive
with humbuker pickups

Smooth bluesy lead sound
with strat

The treble and bass controls are active shelving
EQs which come after the gain stage. Each control
is capable of boosting cutting the signals by +15dB

1 2

off off
off on

on off
on on

Low Gain “twang” boost
with tele

Comp mode : normal
Dip switch: default

Comp mode : comp on
Dip switch: default

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Comp mode : comp off
Dip switch: default