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Boss Katana KTN-Head 100W Guitar Amplifier Head Black

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Katana—the traditional sword carried by the historic samurai of Japan—is a symbol of honor, precision, and artistry in Japanese culture. Adopting the majestic sword’s name with pride, the Katana serie... Click To Read More About This Product


Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
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Katana—the traditional sword carried by the historic samurai of Japan—is a symbol of honor, precision, and artistry in Japanese culture. Adopting the majestic sword’s name with pride, the Katana series presents guitar amplifiers with smooth, cutting tones honed by generations of dedication and expertise. Born of the development process behind the acclaimed Waza amplifier, these innovative amps embody BOSS’s determined pursuit of the ultimate rock sound. Featuring proprietary circuit designs and meticulous tuning, the Katana Series combines traditional craftsmanship and breakthrough functions to produce true next-generation rock amplifiers.

Compact and powerful, the 100-watt Katana KTN-Head delivers sharply defined rock tones with rich, commanding presence. The amp also includes integrated access to 55 BOSS effects, which are customizable using the free BOSS Tone Studio editor software. Up to 15 different effects can be loaded at one time, enabling you to build fully prepared sounds inside the amp. In addition, the versatile Katana KTN-Head is equipped with an effects loop and MIDI for integration with advanced rigs, and features a convenient built-in monitor speaker for tone preview and practice without a cab.

A Refined Amp with Inspiring Tone
Designed for guitarists who are serious about their sound, the Katana KTN-Head offers class-defying power and expressiveness to meet any playing situation. A special method developed for the flagship Waza amp optimizes the head’s interaction with your connected speaker cab, giving you authoritative punch and cutting presence previously attainable only with high-end amp designs. The compact size is easy to carry to gigs, jams, and practice sessions, and the rear panel is filled with lots of connectivity for interfacing with external gear. The amp’s built-in monitor speaker is also handy, letting you check tones and practice anywhere without having to connect to a cabinet.

Five Original Amp Characters, Honed for Rock Playing
Sharpened to perfection by the BOSS engineering team, the Katana KTN-Head’s five amp characters offer everything from organic vintage tones to modern high-gain sounds. Clean is natural and transparent, while Crunch offers satisfying grit and response. Lead has a wide gain range to suit many styles, from fat, stinging blues solos to fluid legato shredding. With DNA inherited from the Waza amp, Brown delivers refined high-gain tone sought after by the world’s greatest rock players. The Acoustic character further enhances the Katana’s versatility, providing optimized tone that makes acoustic-electric guitars sound stunningly natural.

Leave Your Pedalboard at Home
With its built-in BOSS effects and recallable Tone Settings, the Katana KTN-Head lets you create fully prepared sounds for any song or style. Connecting to BOSS Tone Studio via USB provides access to 55 effects that are customizable for your needs. Going beyond standard distortion, delay, and reverb, the selection also includes powerful tone-shapers like pitch shifting, ring mod, slicer, and more. You can load 15 different effects in the amp at one time and use up to three simultaneously. Four Tone Settings let you store custom amp and effects setups for instant recall, and you can always jump to the current panel settings at the touch of a button. External control is also possible with optional footswitches, expression pedals, and MIDI devices.

Grab-and-Go Operation
While the Katana KTN-Head includes many advanced features, it’s amazingly simple to operate. Dedicated knobs for multiple gain stages, three-band EQ, and presence allow you to quickly dial in your tone by ear, just as you would with a standard tube amp. Essential effects parameters are adjusted with a simple knob twist, and Tone Setting memories can be stored with a brief button hold. In addition to throttling back the volume for small stages and home playing, the Power Control has a Standby setting that mutes the sound for switching guitars or taking breaks.

Connect and Control
The Katana KTN-Head’s speaker out supports connection to your favorite 8-ohm or 16-ohm cab. You can also send a simultaneous direct feed to PA or recording equipment using the Line Out, which provides authentic mic’d up tone with power, fullness, and dynamics. It’s also possible to send the same mix-ready sound to your computer music recording software via USB. Advanced players will appreciate the effects loop and MIDI input, which enables easy integration with external effects and MIDI switching devices like the BOSS ES-8 and ES-5.

BOSS Tone Central
At the BOSS Tone Central website, you’ll find numerous free amp and effects setups for the Katana Series. Created by pro guitarists, these setups provide ready-to-play sounds for various music styles, and also make great starting points for building your own sounds. They load into the memories in a Katana amp via the BOSS Tone Studio editor software, which is also available at the site. In addition to Katana effects selection and customization, BOSS Tone Studio gives you a convenient way to organize all your Katana setups for different gigs, recordingsand practice sessions.


  • Power: 100W
  • Built-in power attenuation
  • Five amp modes
  • Speaker: 1x5 monitor
  • Four memory slots for recalling amps and effects
  • 55 effects: store 15, use up to three simultaneously
  • Boss Tone Studio editor software integration
  • USB port
  • MIDI integration
  • Direct line out
Pro Coverage
Boss pedals - 5 year parts warranty
90 day labor warranty.
1 year warranty - Multitracks, Jamstations, etc.
Check with manufacturer for specific product warranty.

Pro Coverage gives you added warranty protection for your gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Click To Read More About This Product.

Pro Coverage includes
  • Accidental damage protection
  • Expedited repair or replacement
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to five years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
BossKatana KTN-Head 100W Guitar Amplifier Head

(based on 4 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


No Pros


No Cons

Best Uses

No Best Uses
    • Was this a gift?:
    • No (3)

Reviewed by 4 customers

Displaying reviews 1-4

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(2 of 2 customers found this review helpful)


Not Perfect

By GuitarHoss

from Alabama

Verified Buyer

Comments about Boss Katana KTN-Head 100W Guitar Amplifier Head:

I've had the Boss Katana 100 head for about 3 weeks. My goal is to reduce the amount of practice and gigging equipment I need to handle. I gig mostly through a pair of Taylor T5's. The songs require a mix of acoustic and electric guitar tones so I must change seamlessly between acoustic, clean, and electric driven tones. The acoustic and clean amp models in the Katana are very low volume as opposed to the other Katana amp models which are many times louder. Thus when the volume is set properly for acoustic or clean amps and then switched to a driven amp the volume is drastically louder unless you manually change the master volume, or use channels where you have previously rewritten the acoustic and clean channels with volumes wide open and the driven channels with volumes low (at about 25%). Let's just say this does not give you the best tones. I saw where a Boss representative suggested turning both the volume and master volume knobs wide open to get the best tones and switching the Katana wattage setting to reduce the amp output thus reducing volume. Really? The volumes for acoustic and clean really need be increased within the amp models themselves in order to maintain the best tones and change from one amp setting to the other without drastic volume changes. I have found no access in the Boss Tone Studio to do this. I've also made extensive comparison of the Katana to my other equipment. I'm playing the Katana through an Egnator Rebel 1x12 cabinet with its stock Celestion speaker. Comparing this Katana setup to my Vox Tonelab SE played through an Atomic Reactor 1x12 amp the Vox Tonelab SE setup provides better tones, better effects and more versatility than the Katana. So where am I with the Katana? I'm still tweaking. It will reduce the amount of effort required to get equipment to most practice sessions. For the price point you get a lot, especially if the acoustic/clean volume situation is not an issue for you. It's a problem right now for me.

  • Was this a gift?:
  • No

(2 of 5 customers found this review helpful)


Kantana KTN-Head 100W

By Dom

from Colorado

Comments about Boss Katana KTN-Head 100W Guitar Amplifier Head:

Bought the head and a fifty watt combo today and sold my blackstar amps today, Bought a Meas Boogie 2x12 cab, and know it is so sweet. Great combo for the bedroom and a head a 2x12 cab in heaven..

  • Was this a gift?:
  • No

(1 of 1 customers found this review helpful)


Awesome amp

By Rob

from Owensboro KY

About Me Experienced

See all my reviews

Verified Buyer


  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful


    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Performances

    Comments about Boss Katana KTN-Head 100W Guitar Amplifier Head:

    Awesome product for the price point. Been playing off and on in bands for decades. Have to say this is the best sounding amp I've used.

    (1 of 9 customers found this review helpful)


    Ripoff. Dont buy it. Get a line 6.

    By Zack

    from On my way to return this crummy amp.

    Comments about Boss Katana KTN-Head 100W Guitar Amplifier Head:

    Boss tone central software if very finicky and several people have had trouble downloading it including myself. Without that, its not even a modeling amp. Also, it doesnt even come with a footswitch. The footswitch is over $100 and you have to line up like some groupie to get one because they are "backordered".
    Compared to othet amps in this price range such as the fender mustang or the line 6 spider v, the boss katana is a ripoff. The spider v head comes with the footswitch and even has a built in tuner. The katana doesnt even have that. It doesnt even sound as good as the fender mustang or the spider. There is absolutely no reason to buy this amp considering all the trouble ive had with the software and trying to get the footswitch. Mine is probably gonna get returned. If i had known it was gonna be this much trouble i never would have purchased it. Buyer beware.

    • Was this a gift?:
    • No

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