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Boss Katana KTN-50 50W 1x12 Guitar Combo Amplifier 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

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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.

With 50 watts of power and a custom 12-in. speaker, the Katana KTN-50 delivers a commanding range of gig-worthy tones that gracefully slice through any band scenario. The amp also excels for home playing, with a uniquely efficient design and innovative Power Control that provides inspiring sound and response at low volumes. In addition, the Katana KTN-50 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 configured in the amp at one time, enabling you to bring fully prepared tones to the stage in one amp.

A Refined Amp with Inspiring Tone
Designed for guitarists who are serious about their sound, the Katana KTN-50 offers exceptional tone and touch response for stage playing, recording, and simply practicing at home. The custom 12-inch speaker is driven by a special method developed for the flagship Waza amp that optimizes the speaker and cabinet character. This gives you authoritative punch and cutting presence previously attainable only with high-end amp designs. In combination with the five selectable amp characters, the Katana KTN-50 produces class-defying power and expressiveness to meet any playing situation.

Five Original Amp Characters, Honed for Rock Playing
Sharpened to perfection by the BOSS engineering team, the Katana KTN-50’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-50 lets you perform anywhere with just a guitar and amp. Connecting to BOSS Tone Studio via USB provides access to 55 effects that are fully 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. Two 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. It’s also possible to connect optional footswitches and expression pedals for hands-free control on the gig.

Grab-and-Go Operation
While the Katana KTN-50 includes many advanced features, it’s amazingly simple to operate. Dedicated knobs for multiple gain stages and three-band EQ 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 memories can be stored with a brief button hold. The Power Control is great for throttling back the volume for small stages and home playing, and also includes a Standby setting that mutes the sound for switching guitars or taking breaks. And by flipping out the integrated tilt stand, you can easily angle the amp back for better sound projection.

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, recordings, and practice sessions.

  • Power: 50W (solid state)
  • Power control: 1/2W, 25W, 50W
  • Two channels
  • Five amp modes: acoustic, clean, crunch, lead, brown
  • Single input
  • Speaker: 1x12 custom
  • Controls: 3-band EQ, gain, volume, boost/mod button, boost/mod knob, delay/FX button, delay/FX knob, reverb button, reverb knob, tap
  • 55 FX (15 stored onboard) 
  • Integration with Boss Tone Studio software
  • Built-in tilt stand
  • Aux. input
  • Recording/headphone output
  • USB B port
  • Footswitch sold separately 
  • Dimensions: 18.6 in. x 15.7 in. x 9.4 in.
  • Weight: 25.7 lbs.
Boss pedals - 5 year parts warranty
90 day labor warranty.
1 year warranty - Multitracks, Jamstations, etc.
Check with manufacturer for specific product warranty.

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  • Customer Reviews

Review Snapshot

by PowerReviews
BossKatana KTN-50 50W 1x12 Guitar Combo Amplifier

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



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Reviewed by 3 customers

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(2 of 2 customers found this review helpful)


A great amp for me

By Robert

from undisclosed

Verified Buyer

Comments about Boss Katana KTN-50 50W 1x12 Guitar Combo Amplifier:

I have been using Vox VT20+ for the past three years. I really didn't need the complications of all the different amp models and effects, so I searched for something simpler. After trying several amps (a Marshall MG30CFX, Line 6 Spyder V), I decided to order the Katana 50 and give it a try. I had to wait for several weeks because the amps were not ready to ship from the factory when I ordered it. Upon receiving and trying the amp out, the amp sounded great to me since it had the range, amplitude, effects, and metal distortion I was looking for. I can get the metal distortion out of it I couldn't get with the Marshall, and it has a wide range of lesser qualities of distortion if that's what is desired. Moreover, the amp sounded way better than the Line 6. There are enough effects to more than meet my needs. I had to update the firmware from the Boss website, but it was a very simple process.

There are two things I had on the Vox that do not come with the Katana - the built-in tuner and 5 channels. The the Katana is a two channel amp while the Vox had 5 channels. The tuner is no big deal since I have both hardware and software tuners I can use, and two channels meet my needs.

I have not pushed the amp past the 2.5 watt setting yet since that setting is more than enough for me to use in my apartment so I don't get my neighbors angry at me. And if I ever want to crank it up to 50 watts in another setting, I always have that option.

(1 of 1 customers found this review helpful)


Katana KTN-50

By N/A

from Salt Lake City

Verified Buyer

Comments about Boss Katana KTN-50 50W 1x12 Guitar Combo Amplifier:

In one word..."AWESOME!!!"

  • Was this a gift?:
  • Yes

(1 of 1 customers found this review helpful)


Fast easy set up and use!

By David

from undisclosed

Verified Buyer

Comments about Boss Katana KTN-50 50W 1x12 Guitar Combo Amplifier:

This little power house completely surpassed most of my expectations. Just a few tiny quirks I can live with that have to do with sound artifacts when switching between channels... other than that - awesome in the studio and for practice.

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