Boss Katana Head MkII 100-Watt Guitar Amp Head / Combo 5″ Speaker

96 out of 100. Incorporating 450+ ratings and reviews.
Boss Katana Head MkII 100-Watt Guitar Amp Head / Combo 5" Speaker

Gearank High Notes

Gearank Recommended

The Katana Head MkII first appeared on our recommended list for Modeling Amps in June 2021 and it’s still on that list now.

It also went on our recommended list for Guitar Amps Under $500 in June 2021 and it remains on that list today.

Then in March 2022 it went on our recommended list for Practice Amps and we’re still recommending it there now.


The Boss Katana MkII series is rating highly in the market, so much so that three of their 100W models made it in this 2021 edition.

This 100-Watt Amp Head takes the same technology found in the combo version, and packs it in an amp head configuration which you can pair with your preferred speakers. But what sets this one apart is the inclusion of an internal 5″ speaker – which together with the built-in power attenuator, allows for getting good tones at low volume levels.

Everything else follows the tried and tested Katana formula, at the core of which are five amp voicings that include Clean, Crunch, Lead, Brown and Acoustic. MkII adds in a variation switch that modifies the five voicings, essentially expanding your amp tone options to 10.

As mentioned above, it comes with built-in power attenuator, that lets you switch from 100W, to 50W, all the way down to 0.5W.

As expected, it comes with Boss effects derived from the companies popular stompboxes and guitar processors.

Other noteworthy features include effects loop and power amp input.

The Boss Katana Head MkII Amp Head is a bedroom friendly amp that you can take on stage, highly recommended especially in today’s stay at home restrictions.


  • Power: 100W (Power Attenuator: 50W, 0.5W)
  • Channels: 4
  • Amp Models: 10
  • Effects: 60 Boss Effects
  • Input: 1 x 1/4, 1 x 1/4″ (Power Amp), 1 x 1/8″ (Aux)
  • Outputs: 2 x 1/4″ (Line/Speaker), 1 x 1/4″ (Headphones/Rec)
  • Weight: 19.4 lbs.

Rating Source Highlights

Website Source *Rating Value
YouTube Guitar Interactive Magazine 100/100
YouTube Taylor Danley 96/100
*Displayed values are prior to the Gearank Algorithm’s adjustments it makes when evaluating the source.