Boss Katana 100 MkII Guitar Amplifier Head (100 Watts)

Make loading in easy with this lightweight, powerful amplifier. Packed with effects, this Katana head can handle any tone, style, and gig thrown its way.

Katana MkII takes the acclaimed Katana guitar amp series to another level, turbocharging the core platform with more sounds, more effects, and more features. Re-voiced variations are available for all five amp characters, doubling the tonal options. And the on-board effects categories have been expanded from three to five, providing even more real-time processing to choose from. The usability has been ramped up too, with a power amp input for modelers and multi-FX, easy stereo expansion for dual amp setups, updated editor software, and many other enhancements.

- More Sounds, More Versatility:
The stage-class Katana MkII lineup picks up where the first generation left off, building on the same core tones and features that have made the series such a worldwide smash. If you loved the original Katana amps, you'll love Katana MkII even more. And if you're new to the party, get ready for sound, feel, and versatility that soars far beyond its price class.

- Five Amp Characters, Ten Overall Tones:
Katana MkII's five primary amp characters offer everything from organic vintage tones to modern high-gain sounds, plus a dedicated voice optimized for acoustic-electric guitar. The characters have been extended with re-voiced variations, providing a wider palette of tone options to craft your personal sound.

- Five Effects at Once:
Katana MkII now includes five simultaneous effects categories, putting the tone-shaping power of a massive pedalboard right inside your amp. Independent Booster, read more Mod, FX, Delay, and Reverb sections come loaded from the factory with three variations in each, providing 15 ready-to-play effects to choose from. Connecting to BOSS Tone Studio lets you dive much deeper if you want -- customize the sections with over 60 different effect types, change the order with four different chains, and much more.

- Full-Throttle Sound Every Time You Plug In:
Backed by BOSS's Tube Logic approach, Katana MkII delivers the authentic output distortion characteristics of genuine tube amplifiers, with the sound and feel becoming richer and more responsive as you turn up the volume. But unlike that classic tube amp, Katana MkII's variable Power Control makes it easy to fly in the sweet spot without getting fired from the gig or kicked out of the house. Just throttle back the overall volume as needed to enjoy inspiring, cranked-amp sound anywhere you play, from bedroom to stage.

- Amplify Your External Gear:
The versatile Katana-Head MkII can also be used as a dedicated amplifier for a favorite preamp, modeler, or multi-effects unit. Connecting to the rear-panel Power Amp In jack bypasses Katana MkII's preamp and effects, letting you tap straight into the Tube Logic power section, complete with grab-and-go Power Control. And with BOSS Tone Studio, the input can be easily optimized for your particular gear with a high-pass filter and adjustable gain.

- One-Touch Recall of Custom Setups:
One of the Katana-Head MkII's most powerful features is the ability to store favorite amp character and effects setups in Tone Setting memories for instant recall. After you've dialed in a sound with the panel controls, simply save it to the desired memory with a quick button hold. Eight Tone Settings (two banks of four) are available, with fast selection right from the panel. And for hands-free operation on the gig, just connect external footswitches or the GA-FC foot controller.

- Connect and Control:
The speaker out on the Katana-Head MkII supports connection to your preferred 8-ohm or 16-ohm cabinet. And with the handy built-in monitor speaker, you're able to check tones and practice anywhere without having to hook up a cab at all. Advanced players will appreciate the MIDI input, which provides easy integration with MIDI controllers and switching devices.

- Stereo Made Easy:
One Katana MkII sounds great, but playing two at once is even better. The Stereo Expand feature makes linking two amps simple, with just one regular cable needed. You're able to control everything from the master Katana MkII, with stereo-compatible effects like chorus, delay, reverb, and others distributed across both amps for a wide, immersive sound field. Stereo Expand is supported on all 100-watt Katana MkII models.

- Ready-to-Mix Direct Tones:
The Katana-Head MkII features line, USB, and phones/recording outputs with mic'd cabinet emulation, letting you send mix-ready amp tones to a PA system, computer DAW, or headphones. The direct sound can be shaped with three different Air Feel settings, which are accessible from BOSS Tone Studio. Two-channel USB operation is supported, allowing you to track in true stereo with many of Katana's modulation, EQ, delay, and reverb effects.

- Compact Gig Commander:
The optional GA-FC foot controller is the perfect partner for the Katana-Head MkII. It connects with a single cable, requires no external power, and features a slim, rugged profile that takes up minimal space. With six footswitches, you're able to recall Tone Settings, turn effects on/off, and tap in tempos. Two expression pedals can also be connected, providing foot control of volume, Pedal FX, and up to three assignable parameters (configurable in BOSS Tone Studio).

- BOSS Tone Studio Enhancements:
BOSS Tone Studio has also evolved alongside the Katana MkII amplifiers. The interface has been updated with a refreshed look, and a number of parameters have been consolidated into the main screen for faster workflow. There's also a dedicated Pedal FX category, making it easier to assign wah and pedal bend effects to a connected expression pedal. And if you're a first-gen Katana owner, it's possible to import your custom patches and use them all with Katana MkII.


- Light and portable 100-watt guitar amp head with powerful, gig-ready sound
- Integrated five-inch monitor speaker for practice without an external cab
- Tube Logic design approach produces class-defying power, authoritative punch, and cutting presence
- Five unique amp characters (Clean, Crunch, Lead, Brown, and Acoustic), plus re-voiced variations for each
- Five independent effects sections (Booster, Mod, FX, Delay, and Reverb), with three selectable variations in each
- Dedicated Pedal FX for foot-controlled wah and pedal bend
- Updated BOSS Tone Studio software for customizing your sound with over 60 different BOSS effects, channel and global EQs, adjustable routing, and much more
- Power Amp In for preamps, modelers, and multi-effects
- Stereo Expand out to link with a second Katana MkII (available on 100-watt models only)
- Eight Tone Setting memories for storing and recalling all amp and effect settings
- Power Control for achieving cranked-amp tone and response at low volumes
- Three Cab Resonance options (Vintage, Modern, and Deep), selectable from the panel or BOSS Tone Studio
- Mic'd cabinet emulation on the line, USB, and phones/recording outputs, with three Air Feel settings available in BOSS Tone Studio
- Optional GA-FC foot controller provides complete amp control, including Tone Setting selection, effects on/off, expression pedal control, and more
- Connections for up to two footswitches or an expression pedal, plus MIDI input for Tone Setting selection and effects on/off from a MIDI foot controller
- Effect loop, with selectable series/parallel operation and adjustable level in BOSS Tone Studio
- Pro setups available at BOSS Tone Central
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Dimensions and Weight in Packaging
Base Item
Shipping Weight: 22.5 lbs
Shipping Dimensions: 22 x 13 x 12 in
Manufacturer Part Number (MPN): KTN-HEAD 2

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 5 out of 5 stars. (10 ratings)
Submitted September 13, 2020 by Allan B in Tempe, AZ

"Greatest thing since the OD pedal"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
This review has been selected by our experts as particularly helpful.
What a great amp! Unless you've been living under a rock I'm sure you know all about Katana and how good it sounds and what a great value it is. Having the head and pairing it with your favorite cab is a dream. Sounds amazing and incredibly versatile. Oh and please, it's NOT a modeling amp. It's a full on solid state amp with modeled effects. It has a sound of its own.

This is an incredibly versatile amp. Clean, crunch, classic rock, metal, it can pretty much do it all. Even without a cab the little 5" speaker sounds pretty good. It's not quite tube but it's really really close. This is the 4th Katana that I've owned. I've had many tube amps and keep going back to Boss. I'm getting older and it's just not fun to lug around a 60 pound tube combo and a heavy pedalboard anymore. Paired the Katana with a 2x12 Celestion V30 closed back cab and it slays. The cab will stay in the band practice room and the head goes with me ;)

The onboard effects are great and I appreciate that if I need to I can just grab the head and go. I also really like that it's very lightweight and the internal speaker is a brilliant idea. It doesn't sound half bad either.

Ease of Use
I really appreciate that it can be adjusted and tweaked just by the panel controls. No menus to scroll through just good old knobs. If you do need to get into some deep editing the Tone Studio is very easy to work with. Boss read more was smart to make the TS a universal look and feel across all of their gear. Once you learn one you've pretty much learned them all. It's a universally known fact that Katanas take pedals well but I'll say it again here. Katanas take pedals well. I actually use this in conjunction with an MS3, EQD Plumes, and a Ventris verb and Nemesis delay. I know the MS3 is redundant but this way I just use the Kat like a normal amp and use the MS3 for effects and to control everything else including the head via MIDI. It's a great and easy set up.

Like just about everything Boss, this is built extremely well.

What a value! For $350 I don't think there's anything else out there that can touch this.

Manufacturer Support
I've used Boss products for almost 40 years and I've only dealt with them directly once. Took a few days to get a response but it was not a break/fix issue it was just a question.

The Wow Factor
Boss has been winning hearts and minds of musicians for almost 50 years. There's a reason why they are so highly regarded. They make great sounding stuff! I'm not going to lie, I'm a bit of a gear snob but I have no issue proudly saying I use a Katana on stage.

Musical Background:
Playing over 40 years

Musical Style:
Rock, jazz, prog
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