Boss WAZA AMP HEAD 75 Owner's 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 influencing
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, reflecting
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.
The Wisdom Of The Past Dictates The Future
The vintage Marshall JTM 45 amplifier circuitry was based on the popular 1959 Fender "Tweed"
Bassman 5F6A circuit. Today, both are legendary amplifiers, each providing their own unique
tone. As the first-generation amplifiers evolved, component and cosmetic changes often took
place; therefore there are a few different variations of these early amplifiers. 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 reflected 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 effort in finding the perfect setting combinations, such as tweaking
the AC power voltage and experimenting with various configurations while driving speaker
and custom load boxes.
Persistent Ingenuity For Greater Expression
Through their circuitry tuning innovations and expertise, BOSS engineers have made
specialized fine adjustments to achieve the ideal brown sound. Historically, there have been
many masterpiece stack amps with complex overtone changes created by adding different
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. "
Owner's Manual
Guitar Amplifier