
Knuckle
Head
II
®
PRESENCE
POWER STANDBY
FOCUS MASTER 2 BASS MIDDLE TREBLE GAIN 2 MASTER 1 TREBLE MIDDLE BASS GAIN 1
BOOST SWEET SCOOP BOOST SELECTNINJA NOTCH BRIGHT
INPUTS
LOW
GAIN
HIGH
GAIN
HANDCRAFTED BY
RIVERA RESEARCH & DEVELOPMENT SYLMAR, CA USA
PULLPULLPULLPULL
CLEAN/RHYTHM LEAD/CRUNCH
PULL PULL PULL PULL
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PACKING INFORMATION
Unpacking
Before you plug in, inspect your KnuckleHead II amp for any damage. Your amp was inspected and
sound-tested before shipment, but transportation can sometimes be tough. Check that the FS-7
Footswitch and power cord have been shipped with the amp. If parts are missing, or if any damage has
occurred, contact your dealer.
Packing Materials
We designed the original box and packing materials to protect your amp during shipment. Save them. If you ever
need to send your amp to us or to anyone else, the original box and packing materials will ensure safe transit.
SAFETY PRECAUTIONS
Throughout this manual, the lightning flash with an arrowhead symbol within a triangle is intended to
alert you to the presence of uninsulated “dangerous voltages” within the product’s enclosure that may be
of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within a triangle is intended to alert the user to the presence of
important operating and maintenance (servicing) instructions in the literature that accompa-
nies the product. There are no user-serviceable parts inside of this amplifier.
Warning: To avoid the risk of shock or fire, do not expose this amplifier to moisture. Do
not remove the chassis from its cabinet, or remove metal covers from chassis parts. Removing
the chassis from its cabinet exposes extremely dangerous high voltages. There are no user-serv-
iceable parts inside. Hazardous voltages are present inside the chassis. Refer all servicing to
qualified personnel.
Caution:To avoid a fire hazard, always replace the fuses with the same type and rating.
Caution: Always replace the line cord (mains supply) with the proper type.
Caution: Always turn off the amplifier before making or unplugging any speaker connections.
Always transport your amplifier securely, preferably in a suitable flight case or packing carton. Before operat-
ing your amplifier, be sure the speakers used are properly connected. For countries where 220 to 240 volts
AC is encountered, make sure that you have the correct power cord. Our 230-volt export unit can be used
with any of these voltages. For Japan 100VAC models, all instructions for the 115VAC models apply.
In the event that you have questions, comments, or suggestions, please contact us at:
Rivera Research & Development
13310 Ralston Ave., Sylmar, CA 91342 USA
Phone: (818) 833-7066 • Fax: (818) 833-9656
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