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Boss Katana-50 MkII 1 x 12-inch 50-watt Combo Amp

50/25/0.5W 1x12" Guitar Combo Amplifier with 5 Amp Voicings, 60 Effects, 4 Tone Slots, Cab-emulated Headphone/Record Output, and USB
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New Sounds and Features Come to the Katana

The BOSS Katana-50 MkII is the latest installation in BOSS's esteemed line of BOSS Katana amplifiers. And whether you're interested in accessing its pummeling 50-watt output section and platform-perfect 12-inch speaker to amplify your existing modelers and preamps, or in building your dream tones from the ground up to create the ultimate all-in-one gig and practice solution, take it from Sweetwater — the Katana-50 MkII is a powerful tool in the hands of any electric or acoustic player. Cab-emulated outputs and monitoring make the BOSS Katana-50 MkII a truly silent stage and studio guitar solution, while multichannel footswitch support provides hands-free remote access to every sound in your arsenal. New amp variations and access to 60 timeless BOSS effects within the BOSS Tone Studio software editor make the 50 MkII a tone tweaker's holiday.

Note: This is not compatible with the GA-FC footswitch. We recommend using the FS-6 as a footswitch.

The BOSS Katana MkII series

With five distinct amp characters to choose from, support for acoustic-electric guitars, and access to a wide range of customizable effects, the BOSS Katana MkII series represents a new generation of flexible amplifiers for practice and performance. Familiar controls allow for fast tone shaping, and you can use the BOSS Tone Studio editor software to further customize your amp settings and effects. The Katana-50 MkII is also equipped with an adjustable Power Control that allows you to achieve cranked-amp tone at lower volume levels. For a does-it-all amplifier for electric and acoustic-electric guitar, you definitely need to check out the BOSS Katana-50 MkII combo amp from Sweetwater.

What's new in the BOSS Katana-50 MkII

Here's a quick list of the hottest features in your second-gen Katana-50 combo guitar amp:

  • Power Amp In(put) — Got a floor unit or tube preamp you can't live without? You can access all 50 watts of the Katana's Class AB power section using the MkII's power amp input. Here you bypass everything before the power amp and speakers, so what you hear is exactly what you expect — only live and in living color.
  • New amp models — The classics you love are back in full effect in the Katana MkII. Only now, you can access new variations on the original five amp models to create an even more versatile gigging platform, from country cleans to metal gains to acoustic-voiced amplification.
  • Updated BOSS Tone Studio — Customizing your sound within the Katana MkII is easier than ever using the new and improved BOSS Tone Studio software; 60 BOSS effects, channel-by-channel EQs, adjustable routing, and much more await your every command.

Ready for any style of music, even acoustic-electric

The BOSS Katana-50 MkII packs five distinct amp voicings. Clean, Crunch, and Lead cover the range from chiming clean tones and gritty rhythm tones to solo-worthy high-gain leads. As an added bonus, the Brown setting is derived from the BOSS Waza amplifier — think iconic '80s metal. And finally, the Acoustic mode allows you to plug in your acoustic-electric guitar, too. No matter what style of music you play or even what kind of guitar you play, there's a world of tone to explore in the BOSS Katana-50 MkII combo amplifier.

Cab-emulated output for silent recording and performance

While the Katana-50 MkII offers a Power Control for getting cranked-amp tone at a low volume level, you can achieve truly silent operation onstage or in the studio. Cab emulation is available on the USB and headphone/recording output, so however you choose to monitor your 50 MkII, it'll feel like you're standing in front of an amp. Selectable cab resonance (Vintage/Modern/Deep) and Air Feel miking emulation (direct, distant, or blended) allow you to tailor emulated tones to taste.

Powered by the NEW BOSS Tone Studio

The Katana-50 MkII supports 60 timeless BOSS effects, and you can load an entire series of them for instant access. The amp's Booster/Mod, FX/Delay, and Reverb controls give you easy one-knob access to each effects type, with a color-coded button to switch between preset effects. To completely customize your effects and amp settings, connect the Katana-50 MkII to your computer via USB and load up the Tone Studio software. Create your own setup, or download setups created by pro guitarists at the BOSS Tone Studio website. Best of all, the Katana-50 MkII can store multiple custom amp and effects profiles for instant recall, making this combo a versatile multichannel amplifier.

Tip: Need a hand getting started with your BOSS Katana guitar amp? Check out the BOSS Katana Setup Guide in our Knowledge Base.

BOSS Katana-50 MkII Combo Guitar Amplifier Features:

  • Versatile combo amp with 5 amp voicings, customizable effects, and editor software
  • Amp characters include Clean, Crunch, Lead, Brown (derived from the BOSS Waza amp), and Acoustic (for acoustic-electric guitar)
  • 60 timeless BOSS effects, accessible from the BOSS Tone Studio
  • Variable Power Control allows you to achieve cranked-amp tone at lower volume levels
  • Shape your tone quickly with dedicated Gain, EQ, and Effects controls
  • Use the BOSS Tone Studio editor software to customize your effects and amp settings
  • Power Amp In brings uncolored amplification to your external modelers and preamps
  • Support for up to 2 footswitches or an expression pedal

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Tech Specs

  • Type: Solid State
  • Number of Channels: 5 x Amp Types
  • Total Power: 50W (25W, 0.5W settings)
  • Speaker Size: 1 x 12"
  • Reverb: Yes
  • Effects: Modulation, Delay, 60 BOSS Effects (Tone Studio software)
  • EQ: 3-band EQ, Tone control
  • Inputs: 1 x 1/4" (instrument), 1 x 1/4" (power amp), 1 x 1/8" (aux in)
  • Outputs: 1 x 1/4" (rec/headphones)
  • USB: 1 x Type B
  • Headphones: Yes
  • Footswitch I/O: 1 x 1/4" (channel/bank)
  • Footswitch Included: No, FS-6 sold separately
  • Computer Connectivity: USB
  • Construction Material: Black Tolex
  • Power Source: Standard IEC AC cable
  • Height: 15.6"
  • Width: 18.5"
  • Depth: 9.3"
  • Weight: 25.6 lbs.
  • Manufacturer Part Number: KTN-50 2

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Customer Reviews

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Rated 5/5

Unbeatable

The Katana is a great amplifier. No question about it. I suffer from Gear Acquisition Syndrome like many of us, but I have zero desire to upgrade amplifiers. The Katana sounds great, is dirt cheap, doesn't need to warm up, generates no heat, requires zero maintenance, etc. If it ever breaks, I will happily buy another one. The only thing I didn't like about the amp was its appearance, so I bought some grille cloth on eBay and switched it out. Now it looks a lot classier to me. I've added a picture.

I use it mostly for clean to lightly overdriven sounds with reverb and delay. It's super lush sounding. Just buy one and liberate yourself!
Rated 5/5

A lot of amp for a beginner!

July 26, 2023

Aloha Sweetwater!

I am a retired, senior who has had an interest in guitars since I was in high school during the early 70's! But there was no YouTube at the time and I got discouraged and lost interest within two years. When I retired three years ago, I found my daughter's guitar in the closet and realized that the desire to play was still in me!

I have bought most of my gear and took lessons at "Island Guitar" in Honolulu. Unfortunately, the shop struggled over the past three years and went out of business earlier this year. But, I am still meeting with my instructor every week. For the past two and a half years I have been practicing contemporary fingerpicking soloing on my Martin guitars. Most of my practice time is on my acoustic guitars but I also have a lot of interest on dialing in nice blues tones on my Fender Mexico Strat and my semi hollow Epiphone. My $ amp produced a nice clean tone but that was about it. I learned on YouTube that great tone comes from a great amplifier. I went to "Guitar Center" a few times to search for a new amp. But they just don't have enough workers and I was never able to talk to any sales person.

That's when I sent Brad Jahn an email. The next day, Damian Hyde reached out with options for an amplifier upgrade. I realize immediately that Damian had expert technical knowledge and skills to serve the best musicians. Damian knew just where I was coming from, and knew just what I was looking for. Many times, a beginner like me doesn't know what questions to ask. Damian made me feel very confident and excited to do my own online research. Prior to my shipment arriving, Damian sent me a YouTube link to get acquainted to Tone Studio. I appreciated using YouTube to help me understand, instead of sending reading material. Before contacting Sweetwater, I was considering the Fender Blues Junior, but Damian suggested that the Boss Katana is a very popular amp and would be a much better fit for me. I appreciate his guidance for the best value and versatility for me.

The Boss Katana is an affordable and exceptionally versatile amp! I placed my order during the Forth of July weekend and FedEx delivered right on time. I am dialing in the basic Gain, EQ and Effects controls in the clean and crunch amps models. I can hear the difference, the Variation button makes. I play in my living room, and everyone appreciates the .5 watt switch. 25 watt is perfect during the daytime hours. I have registered online with Roland but I have not yet logged on to Tone Studio. One feature I desire would be the "Cab Resonance" switch. I hope it is accessible in Tone Studio. Also, the large 12 inch speaker is a big plus for me!

Sweetwater emails keep me up to date with current events. But I really enjoy the instructional and gear demo videos! I will always consider Sweetwater when making purchases in the future. I will also be contacting Damian for guidance/instructions in the months to come. If anyone ever ask me about amplifiers, I will suggest, that they consider the Boss Katana and to contact Sweetwater!

Aloha!
Eugene Shimabukuro
Mililani, Hawaii
Music background: A retired senior, playing in my living room
Rated 5/5

Excellent!

I've been guitaring 40+ years. I've played mostly acoustics during that time, but started on and have always had electrics. I bought the 50 Mk II in hopes of having a versatile, portable, and good sounding amp. The acoustic setting was also an important feature. I've had my Katana for a couple weeks now and am very pleased. My Taylor AE sounds very good through this amp and the ability to add effects such as reverb and delay is nice. It's much lighter than my Fishman Artist - the two would make a nice pair for small acoustic/vocal venues.

I also like the 4 electric options and they are as described. The "variation" voicings and gain knob give you near infinite tone options. I've just used it on "panel" so everything operates like a typical amp an old dog can dial in. I've played tube amps for a good while (mostly my Origin20H with pedals) and I'm very pleased it the tones and sound this amp produces. The ToneStudio maybe something I'll try at some point.

This amp has really impressed me and you get a lot for a great price. This is my new recommendation to students looking for a first amp or upgrade. I may sell a few other amps and get the 100w version so I can use my Ditto in the FX loop.
Music background: 40+ years guitaring
Rated 5/5

I can not say enough about this wonderful amp

This thing has it all. I mostly do home recordings and demos (you'll be surprised of the quality you can put nowa days from home studios). Anyways.. I blown away of what this little bad boy can put out. I liked it so much that I got the head and matching cabinet to jam live with my friends. The USB out is great!
Music background: Drummer, Producer
Rated 5/5

Perfect Practice Amp

I bought this as a backup amp for my Cabin. The brown tone setting out of this Katana is sweet! Plus the compression/attack is tight-better than what I get out of my 3X more expensive REVV G20. All the basic effects (reverb, delay, and modulation) are built-in so you can get by without any pedals. This amp is sooo good I bet prices will jump as people figure out how much bang for the buck you get with these lightweight beauties. I'm buying the 100w head Katana next. A BIG thank you to Matt Subers for continuing to provide excellent support and recommendations.
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