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Purchase options and add-ons

Brand	BOSS
Color	Black
Compatible Devices	Guitar
Output Wattage	20 Watts
Product Dimensions	10"D x 16"W x 10"H

About this item

20W/30W Guitar Combo Amplifier
With Stereo Speaker System
Wireless Transmitter
Bluetooth

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Product information

Item Weight

7.66 pounds

Country of Origin

China

ASIN

B079G4YF3W

Item model number

KTN-AIR

Batteries

8 AA batteries required.

Customer Reviews

4.1 157 ratings

4.1 out of 5 stars

Is Discontinued By Manufacturer

Date First Available

January 30, 2018

Color Name

Black

Compatible Devices

Guitar

Connector Type

wireless

Speaker Count

Output Wattage

20 Watts

Battery type

Alkaline

Power Source

Battery Powered

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product guides and documents

User Manual (PDF)

What's in the box

1 Amplifier

Product Description

Meet the Katana-Air, the world’s first totally wireless guitar amplifier. Featuring new cutting-edge wireless guitar technology developed by BOSS, the Katana-Air gives you the freedom to jam and practice without hassling with guitar cables. And with support for battery operation, there’s no need to plug into AC either, so you can literally play anywhere!

From the Manufacturer

Though compact in size, the Katana-Air is serious about sound quality. Equipped with pro amp tones and effects from the performance-class Katana amplifiers, this wireless wonder delivers premium guitar sounds for any style of music. To further extend the cable-free experience, you can wirelessly edit and organize sounds with a dedicated app and jam with songs streamed from your smartphone. With the innovative Katana-Air and your favorite axe, casual playing has never been more convenient and inspiring.

From the manufacturer

BOSS. quality, stage, studio, audio, stereo, performer, instrument, guitar, looper, musician, guitar

Trusted BOSS quality. On stage. In the studio. At home.

Founded in 1973, BOSS has achieved legendary status among guitarists by offering a world-leading product line-up that includes compact effects, multi-effects, amplifiers, loopers, guitar synthesizers, tuners, accessories, and more.

Compare with similar items

	This Item Boss Katana Air - 20/30-Watt Wireless Guitar Amp	Recommendations Boss Katana Air Guitar Amplifier Bundle with Instrument Cable and Picks	dummy Boss Katana-Air EX 20-/35-watt Wireless Guitar Desktop Amp	dummy Boss Katana 50 MkII Guitar Combo Amplifier Bundle with Instrument Cable and Picks	dummy Positive Grid Spark Guitar Amplifier + Traveler Bag Bundle - Electric, Bass and Acoustic Guitar 40-Watt Combo Amp Including Spark Mobile App	dummy Peavey VYPYR® X2 Guitar Modeling Amp
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$429.99	$429.99	$599.99	-11% $239.99 Typical: $269.99	$299.00	$299.99
Delivery	Get it as soon as Monday, Apr 29	—	Get it as soon as Tuesday, Apr 30	Get it as soon as Monday, Apr 29	Get it Apr 29 - 30	—
Customer Ratings	4.1157	4.24	3.95	4.8148	4.61,654	4.335
Versatility	4.7	4.8	—	4.8	4.4	5.0
Value for money	3.6	4.3	—	4.8	4.5	4.0
Sound quality	3.4	4.8	—	4.8	4.4	4.8
Light weight	4.7	4.5	—	4.6	—	—
Portability	—	4.3	—	4.8	4.6	—
Sold By	Amazon.com	Austin Bazaar	Amazon.com	Austin Bazaar	GearTree	Backwoods Guitar
power source	Battery Powered	Battery Powered	Corded Electric	Corded Electric	Corded Electric	Corded Electric
output wattage	20 watts	15 watts	35 watts	50 watts	40 watts	40 watts
speaker size	—	7.5 centimeters	5 inches	12 inches	—	—
connector type	wireless	wireless	3.5mm Jack	USB	—	usb,wireless
compatible devices	Guitar	Guitar	Guitar	Guitar	Guitar	Guitar
material	—	Copper	—	Copper	Leads	—

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Customer reviews

4.1 out of 5

157 global ratings

How customer reviews and ratings work

Customers say

Customers like the portability, wireless connectivity, and quality of the musical instrument amplifier. For example, they mention it's light weight, and has a solid wireless connection. Some are happy with ease of use, and effects. That said, opinions are mixed on sound quality and performance.

AI-generated from the text of customer reviews

28 customers mention22 positive6 negative

Customers like the quality of the musical instrument amplifier. They say it's brilliant, amazing, and a great practice amp. Some mention that it has some guts.

"Its small. It's light weight. It's not heavy duty by any means but its very functional. I LOVE the wireless transmitter and sleep/wake function...." Read more

"...It's a micro amp that can run even on batteries. It weighs 5lbs. It provides a wireless adapter too. It sounds unbelievable for such a small amp...." Read more

"It's good. It does what it's supposed to do, and does it very well. The wireless guitar connection and instant-on are fantastic...." Read more

"...Overall its a very good value if you consider everything you get:- Portable battery powered guitar amp that sounds legit;-..." Read more

22 customers mention22 positive0 negative

Customers are satisfied with the wireless connectivity of the musical instrument amplifier. They mention that the wireless capabilities are great, the wireless transmitter is great, and the built-in Bluetooth functionality makes it hard to beat. The wireless connection is solid and works as intended. Some say that the jack is ok, but others say that it's defective.

"...to practice or use as a sound system for music which it connects to any blue tooth device. The wireless transmitters has a lot of range...." Read more

"...a reasonably loud Bluetooth speaker, guitar interface, and portable true wireless amp. I use this more often than my other amps by far...." Read more

"...You've have to try one. Walking around the house it connects with zero latency. Amazing freedom. Amazing sound. Amazing feeling. Amazing. Amazing...." Read more

"...It does what it's supposed to do, and does it very well. The wireless guitar connection and instant-on are fantastic. But it simply costs too much...." Read more

10 customers mention10 positive0 negative

Customers find the musical instrument amplifier truly portable, light weight, and compact. They also say it's the leader of portable practice amps at the moment.

"Its small. It's light weight. It's not heavy duty by any means but its very functional. I LOVE the wireless transmitter and sleep/wake function...." Read more

"This thing is incredibly useful. Very compact and packs some great tone in it for the size...." Read more

"...It's a micro amp that can run even on batteries. It weighs 5lbs. It provides a wireless adapter too. It sounds unbelievable for such a small amp...." Read more

"...Portable battery powered guitar amp that sounds legit;- Wireless receiver/transmiter;-..." Read more

9 customers mention9 positive0 negative

Customers like the effects in the musical instrument amplifier. They say it has lots of BOSS effects, and the wireless operation is nice. They also say it's easy to control the effects, tones, and preset modes from the app. Customers also mention that the full BOSS rack is built in, and it opens up a lot of exploration.

"...low volumes and once you get used to the app interface it opens up a lot of exploration. The built in tuner is nice...." Read more

"...Really amazing sounds. It has the full boss effects rack built in. It has everyone of you favorite amp styles. It's stereo 30W. Loud!..." Read more

"This amp has all the effects and tones you need for a great practice session...." Read more

"...Digital interface to record into your computer;- Whole lot of built in effects;- Bluetooth speaker...." Read more

7 customers mention7 positive0 negative

Customers find the musical instrument amplifier very easy to use. They say it works as advertised, is simple, and brilliant. Customers also say it's easy to plug in and go, and easy to play along to songs. However, some customers feel the product is too expensive.

"...guy I have really found myself playing more often since it’s so convenient...." Read more

"...The wireless guitar connection and instant-on are fantastic. But it simply costs too much. It feels like it should be about $300-$350...." Read more

"...is shaped like a black lunch-box that we took to school, really convenient and portable, measuring just 7.1×13.8×5.7-inches and weighs about four..." Read more

"...So easy to plug in and go...." Read more

26 customers mention18 positive8 negative

Customers are mixed about the sound quality of the musical instrument amplifier. Some mention that it has good sound, it sounds unbelievable for such a small amp, and it puts out a wide range of sounds with a lot of punch. However, others say that the amp is way too much for the poor sound and the materials used, the clean setting is very weak in volume, and the low end knob either makes it sound muddy or thin.

"...Its got a great bank of all of Boss's fx pedals. Its loud enough to practice or use as a sound system for music which it connects to any blue tooth..." Read more

"...The built in tuner is nice. For the price I got a reasonably loud Bluetooth speaker, guitar interface, and portable true wireless amp...." Read more

"...It weighs 5lbs. It provides a wireless adapter too. It sounds unbelievable for such a small amp. Really amazing sounds...." Read more

"...My guitar would suddenly stop making sound, and I'd see that the transmitter had turned off...." Read more

18 customers mention11 positive7 negative

Customers are mixed about the performance of the musical instrument amplifier. Some mention it's very functional, excels as a practice amp, and the app works well to set up sounds. However, others say that the transmitter stopped working after a week, is very limited, and not effective. The main gimmick is where it fails, and it does not work with active pickups.

"...It's light weight. It's not heavy duty by any means but its very functional. I LOVE the wireless transmitter and sleep/wake function...." Read more

"Great idea but the execution is a complete failure. The amp itself is convenient and small...." Read more

"This thing is incredibly useful. Very compact and packs some great tone in it for the size...." Read more

"It's good. It does what it's supposed to do, and does it very well. The wireless guitar connection and instant-on are fantastic...." Read more

7 customers mention0 positive7 negative

Customers find the musical instrument amplifier pricey and not worth the money.

"...My only gripe is this amp is kinda pricey for a practice amp but if thats all it was then that would be a different story...." Read more

"...But it simply costs too much. It feels like it should be about $300-$350...." Read more

"The little F'er is kinda expensive for it's size, but man it's worth it. So easy to plug in and go...." Read more

"...4 stars because of the price and app issues." Read more

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Kristopher

Inctedibly versatile little unit.

Reviewed in the United States on November 15, 2018

Verified Purchase

Its small. It's light weight. It's not heavy duty by any means but its very functional. I LOVE the wireless transmitter and sleep/wake function. I love that it has 2 channels with three presets so you can flip between tones with a button press or double tap. A foot controller would defeat the function of this amp. Its got a great bank of all of Boss's fx pedals. Its loud enough to practice or use as a sound system for music which it connects to any blue tooth device. The wireless transmitters has a lot of range. It picks up the signal anywhere in my house. The way its designed is perfect for what its designed to do. I wanna play my guitar, I pick it up, strum a chord and with in seconds the sound is coming out of my Boss Katana. I take it camping to use as a boombox and a guitar amp for my metal camp fire songs. The tones are sweet and very tweakable. You'll find a tone you love in this amp with a little tinkering.

My only gripe is this amp is kinda pricey for a practice amp but if thats all it was then that would be a different story. This amp does so much more than just any other practice amp. I also had a tough time with the app at first but once its set up its a set and foeget type that works very well. I dont blame the app. Im just a ludite and tech thing's arent always intuitive or obvious to me.

Cant recommend this amp enough.

8 people found this helpful

Helpful

Joe

Three uses in one package

Reviewed in the United States on March 10, 2020

Verified Purchase

This thing is incredibly useful. Very compact and packs some great tone in it for the size. Held its own in a jam session with a friend playing a 50w 1x10. My friends were amazed. The wireless is an added bonus. I love using the Bluetooth to pull up back tracks and jam along. Because of this little guy I have really found myself playing more often since it’s so convenient. Really appreciate That this thing can also be used as an interface and a Bluetooth speaker. It sounds good at low volumes and once you get used to the app interface it opens up a lot of exploration. The built in tuner is nice. For the price I got a reasonably loud Bluetooth speaker, guitar interface, and portable true wireless amp. I use this more often than my other amps by far. I would not buy this as my first or only amp as it’s not loud enough for say a jam with drums/band.

One person found this helpful

Helpful

Damiano

Unfreakingbelievae. Must must must have for any guitarist at any level.

Reviewed in the United States on July 28, 2018

Verified Purchase

This is one of those products like the Walkman, the iPhone, the Tesla that redefines a whole experience. For my birthday I got this most amazing guitar breakthrough ever. It's a micro amp that can run even on batteries. It weighs 5lbs. It provides a wireless adapter too. It sounds unbelievable for such a small amp. Really amazing sounds. It has the full boss effects rack built in. It has everyone of you favorite amp styles. It's stereo 30W. Loud! You can take it anywhere. It's an amazingly clean and great Bluetooth boom box for your phone too. Your partner will at least dig that! It can output speaker sim direct into PA. It's unbelievably good. You must try it. It's not cheap but I tell you it's a bargain at $400. Boss Katana Air. I can take it anywhere - it only 11" x6"x5". You've have to try one. Walking around the house it connects with zero latency. Amazing freedom. Amazing sound. Amazing feeling. Amazing. Amazing. 10stars.

19 people found this helpful

Helpful

Mr & Mrs Pendent

It's good, but the price is TOO DAMN HIGH

Reviewed in the United States on June 26, 2022

Verified Purchase

It's good. It does what it's supposed to do, and does it very well. The wireless guitar connection and instant-on are fantastic. But it simply costs too much. It feels like it should be about $300-$350.

One thing to note: if the batteries in the amp get low (down to 1/3rd) you will start to get strange behavior. My guitar would suddenly stop making sound, and I'd see that the transmitter had turned off. I assumed that the battery in the transmitter had died, but when I plugged it in to the amp, it would immediately show fully charged. Turned out the issue was the low batteries. Once plugged into the outlet, I had no other problems. I also have had to real issues with connection to my phone (Fold 3) but I do usually have to manually connect to the MIDI control.

So I'm happy enough with it not to send it back, but just barely. If it were about $100 cheaper, I would be overjoyed.

9 people found this helpful

Helpful

Bart Rinaldi

Great practice amp.

Reviewed in the United States on November 2, 2023

Verified Purchase

This amp has all the effects and tones you need for a great practice session. The APP works very well and the session feature is a nice for jamming along to videos/jam tracks. Highly recommended.

Helpful

A13thGuest

The main gimmick is where it fails.

Reviewed in the United States on November 1, 2018

Verified Purchase

Great idea but the execution is a complete failure. The amp itself is convenient and small. The sound quality is okay but you'll sound better over a small Bose wireless bluetooth for less. (Assuming you already have an iPad with an app with good tones.) A Bose is rechargeable as well. This thing takes AA batteries.

The main buying point for this amp though was for the wireless connection, which is okay but it fails connecting to Bluetooth Midi on two Android devices I tested with. This means all of the patch settings that allow you to do any of the real meaningful tweaks that may improve the sound and make this useful for DAW integration, are not available.

Roland support continues to do a poor job at helping a growing list of upset customers complaining in their forum about the same issue. I've asked if there are any plans to send out a software and/or firmware patch but they send everyone the same canned response. If they had admitted the issue and said updates were coming or, if the source code was open so that the development community could lend a hand, I would consider keeping it. But, in the end, the features that justify the price just aren't there and you're left with an overpriced little plastic practice can. This will need be returned as defective.

38 people found this helpful

Helpful

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CARLOS FABIAN FLORES JASSO

Devolución a los 3 dias.

Reviewed in Mexico on March 27, 2023

Verified Purchase

La bocina suena bien, pero se apaga por sí sola y se desconecta el bluetooth. Traté de ver si en las instrucciones y videos de troubleshoot decía algo, pero nada. La devolví a los 3 días. Para un instrumento que cuesta así de caro, espero que empiece a funcionar instantáneamente y con buena calidad. No sé si me tocó un producto malo y los demás están bien, pero no quise averiguar. Ni modo, mi regalo de navidad se tuvo que regresar.

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Lorraine. Mattinson

30 watt guitar amp

Reviewed in Canada on August 7, 2020

Verified Purchase

This was for my husband and he loves it . It is portable and versatile .

john cain

Wireless god

Reviewed in the United Kingdom on August 19, 2021

Verified Purchase

Best amp ive ever purchased not only for sound and quality but has enhanced my playing aswell so happy with my purchase .

yasser rakan

Very good item

Reviewed in Canada on November 16, 2019

Verified Purchase

Good item

ian black

Game changer

Reviewed in Canada on August 28, 2020

Verified Purchase

Compact, great sound, easy to use, and the Bluetooth feature is so convenient. This is a great product for learning and playing guitar.

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BOSS KATANA-AIR Totally Wireless Guitar Amp System

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