Roland WAZA-HD75 Users Manual
WAZA AMP HEAD 75
75 W output
BOSS WAZA AMP
Boss Waza Craftsmanship Evolves Into The Creation Of An Ultimate Rock Sound Amp
In the early 1960s, the evolution of the electric guitar and its components began inuencing
art. The sweet overdrive sound of what came to be known as the “sound of rock” was made
possible by an impressive line of tube guitar amps. The evolution of these amps, reecting
the passion of master builders in search of an enhanced musical expression, gave birth to the
legendary “brown sound.” This same passion is what inspired BOSS engineers in their pursuit of
the ideal rock sound. While the basic circuit block designs of amps have not changed all that
much, engineers over the years have painstakingly contributed to the evolution of the rock
sound through many phases of inherited craftsmanship and tuning. Fast forward to today: the
BOSS Waza Craftsmanship team, through their proven expertise, has given birth to the new
BOSS Waza Amp. The BOSS Waza Amp has contributed to that evolutionary process through
Waza Craftsmanship with the ideal brown sound for today’s passionate artists.
Owner’s Manual
Guitar Amplier
The Wisdom Of The Past Dictates The Future
The vintage Marshall JTM 45 amplier circuitry was based on the popular 1959 Fender “Tweed”
Bassman 5F6A circuit. Today, both are legendary ampliers, each providing their own unique
tone. As the rst-generation ampliers evolved, component and cosmetic changes often took
place; therefore there are a few dierent variations of these early ampliers. The Marshall amp
had evolved to 100-watt amp heads such as the “Plexi.” The power tube is 6L6 for the Fender,
but for the Marshall, four EL34s with a parallel push-pull design are used to meet the demand
of musicians for more output. As a result, the EL34 sound has been established as the rock
sound. Almost all stack amps have been tuned based on the basic circuitry of the early stack
amp, including the new BOSS Waza Amp, which promises to carry on the legacy.
The Ideal Rock Sound Continues To Evolve
The representative hard rock sound of the ‘70s and ‘80s is known as the “brown sound.” What
then, is the “Waza Brown Sound?” In developing the new Waza Amp, BOSS has been able to
achieve the chewy sustain of the rich tube distortion, while at the same time achieving high
clarity with a dynamic response to the picking nuances of the player. In addition, a chunky
clean sound can be achieved just by turning down the guitar volume. The sustain of the lead
sound is sweet, and the elastic rhythm sound has such high clarity that each note of a chord
can be heard. The dynamic sound change reected by a player’s picking emotion emphasizes
the sound presence in a band ensemble. To produce the Waza Brown Sound, BOSS engineers
devoted much time and eort in nding the perfect setting combinations, such as tweaking
the AC power voltage and experimenting with various congurations while driving speaker
and custom load boxes.
Persistent Ingenuity For Greater Expression
Through their circuitry tuning innovations and expertise, BOSS engineers have made
specialized ne adjustments to achieve the ideal brown sound. Historically, there have been
many masterpiece stack amps with complex overtone changes created by adding dierent
distortions in each stage of serially connected multiple tubes. By adjusting the balance of each
stage, the basic distortion is created. However, the basic sound is not expressive enough. Fine
adjustments with the interaction of each stage of distortion and many other factors are very
important. Not only that, by adjusting how much the interactive factors respond to a picking
attack, and by controlling how the distortions of each stage vary as the sound sustains, a truly
expressive sound can be created. Based on the accumulated expertise of BOSS regarding
distortion and Roland with in Tube Logic, the “Waza Brown Sound” not only means the sound is
“brown,” but that the expressiveness is also “brown.”
USING THE UNIT SAFELY
Before using this unit, carefully read the sections entitled “IMPORTANT SAFETY INSTRUCTIONS” (inside front cover), “USING THE UNIT SAFELY” (p. 2), and “IMPORTANT NOTES” (p. 3). These sections
provide important information concerning the proper operation of the unit. Additionally, in order to feel assured that you have gained a good grasp of every feature of your new unit, read Owner’s
Manual in its entirety. This manual should be saved and kept on hand as a convenient reference.
Copyright © 2017 ROLAND CORPORATION
WARNING
About WARNING and CAUTION Notices
Used for instructions intended to alert the
user to the risk of death or severe injury
should the unit be used improperly.
Used for instructions intended to alert the
user to the risk of injury or material
damage should the unit be used
improperly.
* Material damage refers to damage or
other adverse effects caused with
respect to the home and all its
furnishings, as well to domestic animals
or pets.
ALWAYS OBSERVE THE FOLLOWING
WARNING
Make sure that the power cord is grounded
Connect mains plug of this model to a
mains socket outlet with a protective
earthing connection.
To completely turn o power to the unit, pull out
the plug from the outlet
Even with the power switch turned o, this
unit is not completely separated from its
main source of power. When the power
needs to be completely turned o, turn
o the power switch on the unit, then
pull out the plug from the outlet. For this reason, the
outlet into which you choose to connect the power
cord’s plug should be one that is within easy reach and
readily accessible.
Secure a sucient amount of space at the setup
location
Since this unit normally emits a slight
amount of heat, make sure to secure
sucient space around it, as shown below.
Front Side
20 cm (8 in.)
or greater
30 cm (12 in.)
or greater
5 cm (2 in.)
or greater
20 cm (8 in.)
or greater
Do not disassemble or modify by yourself
Do not carry out anything unless you are
instructed to do so in the owner’s manual.
Otherwise, you risk causing malfunction.
Do not repair or replace parts by yourself
Refer all servicing to your retailer, the
nearest Roland Service Center, or an
authorized Roland distributor, as listed on
the “Information.”
15 cm (6 in.)
or greater
About the Symbols
The symbol alerts the user to important instructions or
warnings.The specific meaning of the symbol is
determined by the design contained within the triangle. In
the case of the symbol at left, it is used for general
cautions, warnings, or aler ts to danger.
The symbol alerts the user to items that must never be
carried out (are forbidden). The specific thing that must
not be done is indicated by the design contained within
the circle. In the case of the symbol at left, it means that
the unit must never be disassembled.
The symbol alerts the user to things that must be
carried out. The specific thing that must be done is
indicated by the design contained within the circle. In the
case of the symbol at left, it means that the power-cord
plug must be unplugged from the outlet.
WARNING
Do not use or store in the following types of
locations
• Subject to temperature extremes (e.g.,
direct sunlight in an enclosed vehicle, near
a heating duct, on top of heat-generating
equipment); or are
• Damp (e.g., baths, washrooms, on wet
oors); or are
• Exposed to steam or smoke; or are
• Subject to salt exposure; or are
• Exposed to rain; or are
• Dusty or sandy; or are
• Subject to high levels of vibration and shakiness; or are
• Placed in a poorly ventilated location.
Do not place in a location that is unstable
When using the unit with a speaker
cabinet or a rack recommended by Roland,
the stand must be carefully placed so it is
level and sure to remain stable. If not using
a stand, you still need to make sure that
any location you choose for placing the unit provides
a level surface that will properly support the unit, and
keep it from wobbling.
Connect the power cord to an outlet of the correct
voltage
The unit should be connected to a power
supply only of the type described as
marked on the rear side of unit.
Use only the supplied power cord
Use only the attached power cord. Also,
the supplied power cord must not be used
with any other device.
Do not bend the power cord or place heavy objects
on it
Otherwise, re or electric shock may result.
Avoid extended use at high volume
Use of the unit at high volume for
extended periods of time may cause
hearing loss. If you ever experience any
hearing loss or ringing in the ears, you
should immediately stop using the unit
and consult a specialized physician.
Do not allow foreign objects or liquids to enter
unit; never place containers with liquid on unit
Do not place containers containing liquid
(e.g., ower vases) on this product. Never
allow foreign objects (e.g., ammable
objects, coins, wires) or liquids (e.g., water
or juice) to enter this product. Doing so
may cause short circuits, faulty operation,
or other malfunctions.
Turn o the unit if an abnormality or malfunction
occurs
Immediately turn the unit o, remove the
power cord from the outlet, and request
servicing by your retailer, the nearest
Roland Service Center, or an authorized
Roland distributor, as listed on the
“Information” when:
• The power cord has been damaged; or
• If smoke or unusual odor occurs; or
• Objects have fallen into, or liquid has been spilled onto
the unit; or
• The unit has been exposed to rain (or otherwise has
become wet); or
• The unit does not appear to operate normally or exhibits
a marked change in performance.
Be cautious to protect children from injury
Always make sure that an adult is on hand
to provide supervision and guidance when
using the unit in places where children
are present, or when a child will be using
the unit.
Do not drop or subject to strong impact
Otherwise, you risk causing damage or
malfunction.
Do not share an outlet with an unreasonable
number of other devices
Otherwise, you risk overheating or re.
Do not use overseas
Before using the unit in overseas, consult
with your retailer, the nearest Roland
Service Center, or an authorized Roland
distributor, as listed on the “Information.”
Turn the unit o before installing the Tone Capsule
Before installing the Tone Capsule, you
must rst always turn o the
WAZA AMP HEAD 75 and unplug its power
cord.
Don’t block ventilation openings
Don’t allow the unit’s ventilation openings
to be blocked by a newspaper, tablecloth,
curtains, or similar objects.
Don’t place burning objects on the unit
Don’t place any burning object
(such as a candle) on the unit.
Be aware of weather conditions
Use the apparatus in moderate climates.
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IMPORTANT NOTES
CAUTION
When disconnecting the power cord, grasp it by the
plug
To prevent conductor damage, always
grasp the power cord by its plug when
disconnecting it from this unit or from a
power outlet.
Periodically clean the power plug
An accumulation of dust or foreign objects
between the power plug and the power
outlet can lead to re or electric shock.
At regular intervals, be sure to pull out
the power plug, and using a dry cloth,
wipe away any dust or foreign objects that may have
accumulated.
Disconnect the power plug whenever the unit will
not be used for an extended period of time
Fire may result in the unlikely event that a
breakdown occurs.
Route all power cords and cables in such a way as
to prevent them from getting entangled
Injury could result if someone were to
trip on a cable and cause the unit to fall
or topple.
CAUTION
Avoid climbing on top of the unit, or placing heavy
objects on it
Otherwise, you risk injury as the result of
the unit toppling over or dropping down.
Never connect/disconnect a power plug if your
hands are wet
Otherwise, you could receive an electric
shock.
Disconnect all cords/cables before moving the unit
Before moving the unit, disconnect the
power plug from the outlet, and pull out all
cords from external devices.
Before cleaning the unit, disconnect the power
plug from the outlet
If the power plug is not removed from the
outlet, you risk receiving an electric shock.
Whenever there is a threat of lightning, disconnect
the power plug from the outlet
If the power plug is not removed from the
outlet, you risk causing malfunction or
receiving an electric shock.
CAUTION
Install only specied Tone Capsule
Install only the specied Tone Capsule
(WAZA Amp compatible). Remove only the
specied screws (p. 6).
Keep small items out of the reach of children
To prevent accidental ingestion of the
parts listed below, always keep them out of
the reach of small children.
• Removable Parts
Thumb screws (p. 6)
Screws (p. 7)
Take care not to get burned
The area shown in the illustration may
become hot, so take care to avoid burns.
IMPORTANT NOTES
Power Supply
• Do not connect this unit to same electrical outlet that is
being used by an electrical appliance that is controlled
by an inverter or a motor (such as a refrigerator,
washing machine, microwave oven, or air conditioner).
Depending on the way in which the electrical appliance
is used, power supply noise may cause this unit to
malfunction or may produce audible noise. If it is not
practical to use a separate electrical outlet, connect
a power supply noise lter between this unit and the
electrical outlet.
Placement
• Using the unit near power ampliers (or other
equipment containing large power transformers) may
induce hum. To alleviate the problem, change the
orientation of this unit; or move it farther away from the
source of interference.
• This unit may interfere with radio and television
reception. Do not use this unit in the vicinity of such
receivers.
• Noise may be produced if wireless communications
devices, such as cell phones, are operated in the vicinity
of this unit. Such noise could occur when receiving
or initiating a call, or while conversing. Should you
experience such problems, you should relocate such
wireless devices so they are at a greater distance from
this unit, or switch them o.
• When moved from one location to another where the
temperature and/or humidity is very dierent, water
droplets (condensation) may form inside the unit.
Damage or malfunction may result if you attempt to use
the unit in this condition. Therefore, before using the
unit, you must allow it to stand for several hours, until
the condensation has completely evaporated.
• Depending on the material and temperature of the
surface on which you place the unit, its rubber feet may
discolor or mar the surface.
• Do not place containers or anything else containing
liquid on top of this unit. Also, whenever any liquid
has been spilled on the surface of this unit, be sure to
promptly wipe it away using a soft, dry cloth.
Maintenance
• Never use benzine, thinners, alcohol or solvents of any
kind, to avoid the possibility of discoloration and/or
deformation.
Additional Precautions
• Use a reasonable amount of care when using the unit’s
buttons, sliders, or other controls; and when using
its jacks and connectors. Rough handling can lead to
malfunctions.
• When disconnecting all cables, grasp the connector
itself—never pull on the cable. This way you will avoid
causing shorts, or damage to the cable’s internal
elements.
• Heat will radiate from the unit during normal operation.
• To avoid disturbing others nearby, try to keep the unit’s
volume at reasonable levels.
Intellectual Property Right
• Roland and BOSS are either registered trademarks or
trademarks of Roland Corporation in the United States
and/or other countries.
• MMP (Moore Microprocessor Portfolio) refers to a patent
portfolio concerned with microprocessor architecture,
which was developed by Technology Properties Limited
(TPL). Roland has licensed this technology from the TPL
Group.
• ASIO is a trademark and software of Steinberg Media
Technologies GmbH.
• This product contains eParts integrated software
platform of eSOL Co.,Ltd. eParts is a trademark of eSOL
Co., Ltd. in Japan.
• Company names and product names appearing in this
document are registered trademarks or trademarks of
their respective owners.
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