Boss Katana-50 MkI Combo Guitar Amp (Discontinued)


92 out of 100. Incorporating 600+ ratings and reviews.

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Boss Katana-50 Combo Modeling Guitar Amp

Meta Analysis Overview

Our rating of 92/100 is based on analysis of 600+ sources comprised of online reviews and discussions. Under the Pros and Cons headings below you'll find a condensed analysis of what those owners and users have been saying. Feel free to ask questions or add your thoughts in the comments section.

NB: This model has been superseded by the highly rated Boss KATANA-50 MkII.

Well known for their guitar pedals, Boss injected their brand of versatility, quality, durability and intuitive control into their line of Katana amp. In particular, the Katana-50, a 50W 1x12" combo amp with built-in power attenuator and effects, made waves in the entry level market.

This amp comes with built-in Boss effects, which are developed using the same technology found on their guitar processors. Up to 15 of them can be saved on the amp from a total of 55 available, all done via USB connection.

There are also five amp voicings, which include the usual clean, crunch and lead, along with brown voicing (high gain '80s rock sound) and acoustic (emulates acoustic amplifiers).

Another cool feature of this amp is its attenuator, which lets you switch between 50W, 25W and 0.5W to make it easier to drive the amp at lower volume levels.

The Katana-50 has Boss' same minimalistic and sturdy appeal as their pedals, while having enough sonic flexibility.


  • 50 / 25 / 0.5 Watts
  • 12" Speaker
  • 3-Band EQ
  • Up 15 Effects Saved, 55 Total Effects Selection
  • 1 Foot-Switchable Port for Channel Select or Expression Pedal
  • Software Control via USB

Most reviewers attribute their high ratings to the amp's versatility. There are reports of it being used to great effect in various music styles and venues of different sizes. It even works well for low volume practice, thanks to its 0.5W attenuation setting. With its flexibility, many users feel that they are getting much more for the money they spent, some even proclaim that the Boss Katana-50 is the best value guitar amp in its price range. It also gets a lot of thumbs up for its sound, even from those who have minor complaints can't help but compliment its sound.

Even with so many features on board, there still a few customers who wish for extras like more user presets, and more control options on the amp itself. Speaking of controls, there are some who feel that the amp is too dependent on a computer for tweaking.

With its built-in attenuation, effects and amp voicings, the Boss Katana-50 is a true all-in-one amplifier that any guitarist will appreciate.

NB: This model has been superseded by the highly rated Boss KATANA-50 MkII.