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Boss Katana Mini Review – Best Metal Amp Under $100

photor displays Boss Katana Mini

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If you think you can’t get heavy metal tones on a budget amp, you need to read my Boss Katana Mini review!

The fan-favorite and ever so popular Boss Katana has a downsized cousin – the Katana Mini. It’s small, until you plug your guitar in and hit the first chord through it. Then it’s huge!

I was excited to see if this tiny amp retains more of the features of its big brothers. That’s why I decided to test this amp myself and honestly, I’m impressed with the results.

So, just how effective and useful is this mini package from Boss?

reveals owner of guitaristnextdoor.com

Reviewer: Teemu Suomala

Playing guitar since 2009. Mainly focused on electric guitars, although plays acoustics too. Started this blog in January 2020.

Boss Katana Mini Review

Summary (If you are in a hurry)

image reveals pros and cons of Boss Katana Mini

The Boss Katana Mini is a phenomenal practice amp under $100 – Especially for metal, hard rock, and punk.

Boss has really got all the right boxes checked, including sound, portability, and of course, features.

The Katana Mini surprised me with its brown amp setting particularly, with thick, growling leads and heavy distortion that blows other amps out of the water.

Plus the delay effect is nice to have, and you can achieve a reverb-like effect with it using zero delay time and high levels.

Overall, it’s a solid option for:

  • Beginners
  • Travelers
  • Players looking for a cheap portable amp
  • Players who need a solid metal amp

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Boss Katana Mini Specs and Dimensions

Power: 7 Watts

Amplifier-type: Solid-State

Speaker: 1 x 4″ Speaker

Channels: 1

Controls: Gain, Volume, 3-band EQ (Bass, Middle, Treble), Delay Time, Delay Level

Effects: Delay

Inputs: 1 x 1/8″ (aux in), 1 x 1/4″ (instrument), DC Adapter in

Outputs: 1 x 1/8″ (headphones/rec out)

Weight: 2.52lbs (1.14kg)

image reveals Boss Katana Mini dimensions and weight

Look, Feel, and Build Quality

Anyone shopping for a sub-$100 amp isn’t looking for the most marvelous piece of hardware.

And bar a few exceptions (looking at you VOX!), you can expect average build quality and feel at best. The same applies here, too.

This is a pretty barebones-looking amp A simple black box that screams affordable.

It uses plastic everywhere without any fancy appointments. The only off-centre addition being a couple thin metal strips and the “Boss” logo on the front.

Would I consider this a downside?

Absolutely not! It’s what you can expect at this price.

Besides that, the handle is large and firm enough. There is a minor con with this handle, which I’ll talk about in the “Portability” section.

One thing I really liked about the design is the 4 rubber legs/pads at the base. The amp sits extremely stable on a desk. You won’t have to worry about accidentally knocking or sliding it.

Well, I believe Boss knew that as well. This is not the amp you want to drop or leave it lying on the stage at your next gig.

But overall, I can say the construction, look, and feel are good-enough for a $100 amplifier.


photo displays features of Boss katana mini

As far as the features are concerned, the Boss Katana Mini has got all the basics covered.

You’re getting:

  • 3 different amp types: Clean, Crunch, and Brown (read ‘Distortion’). A single 3-way switch is provided to change between the amp settings.
  • A Gain knob for controlling the distortion.
  • Volume knob to adjust the signal level.
  • Here’s my favorite one – a 3-band EQ (Bass, Middle, and Treble knobs) that really gives this amp extra tone shaping capabilities. A lot of the budget amps tend to skip this one!
  • The final two knobs: Time and Level control the only effect present on this amplifier – Delay.

No reverb you might ask?

Well, there is no dedicated reverb module, but you can get a reverb-like effect by dialing the delay knobs to certain values.

All you need to do is set the delay time to zero and crank the level to near-full. Technically, this is a rapid echo that goes on for a long time, but it sounds very similar to reverb.

Yes, reverb on its own would have been nice, but you have to be at peace with what we have here.

Talking about the inputs, you again have everything you need in a practice amp:

  1. A 1/4” instrument input jack.
  2. Aux input so you can jam along with backing tracks.
  3. Headphone in/Rec out
  4. A DC power adapter input. Only problem being that the DC adapter is sold separately, as you’ll be regularly draining batteries.

For its price and size, the Katana Mini offers more than enough. Overall, I’m happy with the features.

Anyone can nitpick at this price and come up with flaws – Only 1 effect, no tuner, no tap-tempo for the delay, etc. Not reasonable!


Usability is one thing I really like about this amp. It’s simple and enables you to easily tap into every feature of the amp.

Again, the amp has that plastic fee, plus the amp-type selector is tiny, so fast accurate amp-type changes can be a bit tricky. But overall, usability satisfied me for sure.

Portability and Battery Life

The amp is feather-light at just around 2.52 lbs(this is my data). It can’t get more portable than this.

However, one thing that I found to be annoying is the handle they’ve provided.

Not that it’s flimsy or anything, it’s actually quite big and sturdy. But the problem is its positioning.

The handle is placed way too close to the knobs at the top, which leaves little room for your fingers to curl around. Your hand will almost always be fighting with those knobs for space – either your knuckles or fingers depending on the side you hold it.

While it’s good enough for carrying it around your house, I’d say toss it into your backpack if you want to take it anywhere else.

Regarding the batteries, the Katana Mini uses 6 Alkaline AA batteries, and promises up to 7 hours of usage.

And in my testing, this info seemed to be accurate. Battery life was around 6-8 hours depending the use and settings that the amp is played.

This is not the best battery life I’ve seen in a portable amp. So, if you don’t get the optional DC adapter, I’d suggest using rechargeable batteries. It’s both cheaper and more efficient in the long run.


Check a sound demo:

During my testing, I found that the amp has massive potential in the distorted territories, but let’s start with cleans first (save the best for the last, right?).


Clean tones are okay on the Katana Mini, but it’s definitely NOT a strong suit of this amp.

Across the board, you’ll notice a ‘boxy’ signature and a bit dull character in the sound. Cleans for me should be rich and sparkly, but here it’s a different story.

Cranking up the gain or fiddling with the EQ settings doesn’t help much either. This little amp likes to stay dry and unexciting.

It’s not very loud with the clean setting either, so don’t expect your guitar to cut through a heavy jam session.

Well, it’s not bad, but after reviewing amps like Blackstar Fly 3 and Roland Micro Cube, I expected more from the Mini.

But it’s certainly usable, especially if you’re okay with the boxiness, or maybe you like the sound. Setting all three EQ knobs to max definitely gives it some warmth and fullness, which I liked.


The crunch tones kind of disappointed me to be honest.

At low gain, you can barely tell the difference between crunch and clean. And as soon as you kick in the gain, the boxiness and ‘spanky’ character of the sound become extremely noticeable.

If you ask me, I’d always prefer a low-gain brown setting rather than using the crunch on this one.

It might work for some ‘crunchy’ blues or classic rock styles, but it’s not very versatile beyond that.

It’s not a bad tone, but most other amps I’ve tested at this price offer way better crunch tones.


Honestly, I didn’t expect much after listening to the other two settings.

But here I am, flattered by the utter delight this brown setting has given me!

I think the distorted tones on this  amp are really powerful, with amazing sustain and clarity. Boss definitely borrowed the good bits from their more expensive Katana models.

I would NOT say it’s a modern metal sound, but it’s pretty darned good for some high-gain hard rock or classic metal. I think a boost or overdrive pedal can definitely take this amp to the next level, but I didn’t test that.

It’s seriously impressive for a budget metal amp, and I mean it!

For leads, the amp shines with high gain and toned-down mids & treble. It’s really versatile!

In short, if you’re looking for a budget practice amp with amazing distorted tones, look no further than this!

Sound demo with budget metal guitar:

Here’s a graph that reveals what this amp can handle in my opinion:

graph reveals what genres and songs Boss katana mini can handle

Value for Money

For just a $100, you’re getting:

  • Great portability
  • 3 different amp types
  • Excellent distorted tones
  • Inbuilt delay effect with time and level controls
  • Beginner-friendly controls
  • 3-band EQ

And of course, a “Boss” quality and trust!

It’s hard to go wrong with this amp, especially if you’re looking for a practice amp for metal and hard rock.

All things considered, the Boss Katana Mini is a terrific value for money.


image displays guitaristnextdoor.com's Boss katana mini review ratings

The Boss Katana Mini is a tiny but power-packed practice amp!

Distorted tones are where this amp shines in my opinion. I don’t think you can get better metal and hard rock tones in any other amp under $100.

The clean and crunch tones lack a bit of punch and sizzle. They are not bad, but not great either. For instance, the Blackstar Fly 3 has better cleans at an even lower price.

But overall I liked this amp a lot and had real fun while testing it.

I’ll wholeheartedly recommend it to anyone looking for a portable amp to add to their metal rig.

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Is Boss Katana Mini Worth It?

Based upon my testing, the Katana Mini is well worth it for anyone looking for a reliable practice amp under $100.

It’s easy-to-use for any beginner, is highly portable, and has great features for the price.

Metal enthusiasts will find an absolute delight in this amp’s sound, and rock and blues players are not left far behind either.

Does Boss Katana Mini Have Effects?

The Boss Katana Mini only has a single effect – Delay, and it has two controls for the effect: Time and Level.

But you can achieve an effect similar to studio reverb with this delay module – just set the time set to low and level cranked up to full.

Does the Boss Katana Mini Take Pedals Well?

It depends on what you want to achieve out of the amp.

If you need good cleans as a foundation to then add grit, squeals, and all sorts of growls via pedals, the Katana Mini is not the best amp for that purpose. Its cleans are pretty boxy so you won’t get the desired results.

On the other hand, if you need to boost the already overdriven sound coming out of it and take it to the modern metal territory, then pedals will definitely help.

How Long Do Batteries Last in Boss Katana Mini?

Boss claims that the battery on the Katana Mini lasts for about 7 hours. In my testing batteries lasted 6-8 hours.

It’s nothing exceptional to boast about and you’ll be better off if you purchase the separate DC adapter or at least rechargeable batteries. But for the price, battery life is not too bad either.


Roland Micro Cube GX – Best Portable Amp Under $200

The Roland Micro Cube GX is one of my favorite budget amps of all.

For a little more money, you get:

  1. 7 amp types, making it super-versatile
  2. Sturdy build quality
  3. Thicker and fuller sound
  4. More effects (chorus, reverb, phaser, octave, etc.)
  5. Digital Tuner

It’s clear that you’re getting full worth of the extra investment over the Katana Mini.

The only place where the Boss Katana Mini wins is the 3-band EQ, where the Micro Cube has only 1 tone-shaping knob.

Other than that, I’d seriously suggest checking out the Roland Micro Cube GX if you need a durable all-round portable amp, and have just a little more cash to spare.

Check latest prices on:

Blackstar Fly 3 – Best Portable Cleans Under $100

I already praised the Blackstar Fly 3 a couple of times in the review, but let me put it here.

It has the best clean tones on a compact amp under $100.

But wait – no handle! There goes the portability down the tubes. It’s still very light and small so at least you can carry it around pretty easily.

The richness and clarity is very much there. And even though it’s not as loud as some other amps, I still find it a better option when it comes to portability.

You won’t get the mean distorted leads of the Katana Mini, but for clean and crunch tones, the Blackstar steals the deal.

So, if you need solid cleans for blues, rock, jazz, and great crunch tones for classic rock & blues, this is the best bang-for-the-buck option.

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VOX Pathfinder 10 – Best Cleans & Classic Rock Tones Under $100

Again, an amazing budget amp with phenomenal clean and crunch tones.

And yet again, the high-gain distorted tones on this one fail to impress.

The VOX Pathfinder 10 is big and heavy, and thus, not very portable. But it’s definitely the best-looking amp in its category.

But man that open back design produces a sound which will fill an entire room. It also sounds richer, with deeper lows and crisp highs.

There’s one little drawback you should know, there’s no aux input, which is a very basic feature on all these amps.

Check latest prices on:


So, this was my review of the Boss Katana Mini portable amp.

I’m seriously impressed with how Boss managed to pack such thick and growling distorted tones on this little beast.

I like metal, and I like budget amps. So this is a no-brainer pick for me! If you can relate to any of that, it should be a no-brainer for you as well.

Hope you enjoyed reading the article.

Have a great day and keep chugging!

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