
IMPORTANT SAFETY INSTRUCTIONS
1. Before attempting to use this apparatus, read and follow these
instructions for proper use.
2. Keep these instructions.
3. Heed all warnings.
4. Do not use this apparatus near water.
5. Clean only with a dry cloth, do not use any solvent such as
benzene, naphtha or paint thinner on apparatus.
6. Do not block any ventilation openings. Install in accordance
with manufacturer’s instructions.
7. Do not install near any heat sources such as radiators, heat
registers, stoves or other apparatus (including other ampli-
fiers) that produce heat. Avoid placing the apparatus in direct
sunlight.
8. Do not defeat the safety purpose of the polarized or ground-
ing type plug. A polarized plug has two blades with one wider
than the other. A grounding type plug has two blades and
a third grounding prong (protective earth connection). The
wide blade or third prong is provided for your safety. If the
provided does not fit your outlet, consult an electrician for
replacement of obsolete outlets.
9. Be sure that the amplifier’s rated power supply voltage and
frequency matches the voltage and frequency of your power
source BEFORE connecting amplifier to the power source.
The amplifier’s rated power supply voltage and frequency
are clearly indicated on the back panel near the power inlet,
and the power cord’s plug should match the power source
in your region.
10. Protect the power cord from being walked on, pinched, or
from excessive stress, particularly at the plug and attachment
point of the apparatus.
11. Only use attachments and/or accessories specified by the
manufacturer.
12. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as the power plug or cord is damaged, liquid has
been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not
operate normally or has been dropped.
13. To ensure proper ventilation, ensure that there is a minimum of
4” (10cm) of space at the rear of the apparatus. The ventilation
should not be impeded by covering the ventilation openings
with items such as newspapers, cloth, tapestries, curtains,
etc. Do not impede ventilation by placing objects on top of
the apparatus which extend past the rear edge of the cabinet.
14. No naked flame sources, such as lighted candles or oil lamps,
shall be placed on the apparatus.
15. The apparatus shall not be exposed to dripping or splashing,
and insure that no objects filled with liquids, such as vases or
beverages, are placed on the apparatus.
16. The AC plug is the mains disconnect, the plug shall remain
accessible after installation.
17. WARNING: To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.
18. WARNING: Do not defeat the safety grounding pin on the
power cable, it is there for your safety.
19. WARNING: Do not open or perform any internal modifications
on this apparatus.
20. WARNING: Do not attempt to repair the apparatus, or replace
parts within it (except where this manual provides specific
instructions directing you to do so). Refer all servicing to your
retailer, the nearest authorized Mesa Boogie Service Center,
or authorized Mesa Boogie distributor in your region.
21. WARNING: Always disconnect the apparatus from the power
source before changing fuses, tubes or removing the chassis
for service. Use only the same type and rating as specified on
the back of the apparatus when replacing a fuse.
22. WARNING: Disconnect apparatus from the power source dur-
ing a lightning storm or when unused for long periods of time.
23. WARNING: This apparatus is heavy. Insure that the apparatus
remains stable after installation.
24. WARNING: In areas where children may be present, use ad-
ditional precautions as needed to protect the children from
the hazards presented by the unit. This includes risk of electric
shock, burns and toppling over.
25. CAUTION: This apparatus contains hot components and
surfaces. Avoid direct contact with heated tubes and other
components. Insure that any factory installed guards remain
installed.
26. CAUTION: Avoid contact with moving fan blades that may be
present within the apparatus or cabinet.
27. CAUTION: Tube envelopes are glass and can present a
hazard if broken. Always turn apparatus o, disconnect from
the power source, and allow to cool before changing tubes.
28. CAUTION: To avoid damaging your speakers and other equip-
ment, turn o the power of this and all connected equipment
before making or changing connections. Power apparatus up
with the volume levels set to minimum, and slowly increase
to desired level.
29. CAUTION: Always insure that the proper speaker load is
connected to the apparatus before operating the apparatus.
Failure to do so may cause damage to the apparatus.
30. CAUTION: Do not use excessive force when handling cords,
jacks, buttons, switches and controls. Never unplug the ap-
paratus from the power source by pulling on the wire, use
the plug body.
31. CAUTION: This apparatus, in combination with speakers and/
or headphones, may be capable of producing sound levels
that could cause permanent hearing loss. Do not operate
for a long period of time at high levels, or at a level that is
uncomfortable, without hearing protection. If you experience
any hearing loss or ringing in the ears, you should immediately
stop using the apparatus and consult an audiologist.
[rev. 12/18/2020]