Pre-Owned Boss Katana-50 MK1


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Boss 2019 Katana 50 MK I Modeling Combo

The Boss Katana KTN-50 is more than just a bedroom practice amp; it's a gig-ready powerhouse that you can rely on. With its versatile power scaling function, you can go from 50 watts down to 0.5 watts, ensuring you get a killer sound at any volume level. Whether you're quietly crafting your tone at home or cranking it up to compete with your drummer on stage, the Katana-50 has you covered.

Endless Possibilities with Built-In Effects and Amp Styles:

This amp is a treasure trove of sonic possibilities. Packed with a variety of cool effects inspired by famous Boss pedals, programmable presets, and a selection of distinct amp styles, the Katana-50 lets you explore your sound without the need for a pedalboard. Plus, with the upgraded Version 2 software, you have even more effects types and tone settings at your disposal, taking your creativity to the next level.

Simple Controls, Powerful Sound:

While the Katana-50 offers a wide range of advanced features, its control layout remains clear and user-friendly. You can dial in your tone by ear, just like you would on a standard tube amp, thanks to the straightforward knobs for essential amp settings and effects parameters. It won't take long before you're unleashing the full potential of the Katana's sonic capabilities.

Boss Tone Central and Firmware Updates:

The Boss Katana series is all about giving you the tools to shape your sound. With access to Boss Tone Central, you can explore and download free amp and effects setups created by professional guitarists. These setups can be easily loaded into your Katana-50 through the Boss Tone Studio editor software, available on the website. Additionally, Boss frequently releases firmware updates, enhancing your Katana's capabilities. The latest Version 3 firmware brings three new effect types, including the Roland DC-30 Analog Chorus-Echo, Boss GE-10 Graphic Equalizer, and expressive 95E Pedal wah effects, along with the ability to record in stereo for a wider, more authentic sound.


  • Rated Power Output: 50 W
  • Nominal Input Level:
    • INPUT: -10 dBu (1 M ohm)
    • AUX IN: -10 dBu
  • Speaker: 12" Custom Speaker
  • Controls: POWER switch, MASTER knob, POWER CONTROL switch (STANDBY, 0.5 W, 25 W, 50 W), Amp Type switch (ACOUSTIC, CLEAN, CRUNCH, LEAD, BROWN), Gain and Volume Knobs, 3-band EQ (BASS, MIDDLE, TREBLE)
  • Multi Fx: BOOSTER/MOD button, DELAY/FX button, REVERB button, TAP button, BOOSTER/MOD knob, DELAY/FX knob, REVERB knob
  • Connectors: INPUT jack, AUX IN jack, REC OUT/PHONES jack, EXP PEDAL/CTL CH1/CH2 jack, USB port, AC IN jack

The Boss Katana KTN-50 is your gateway to sonic exploration, whether you're crafting tunes at home or taking center stage at a gig. Harness its power, experiment with effects, and make your sound truly your own.


  • Width: 398 mm (15-11/16 inches)
  • Depth: 238 mm (9-3/8 inches)
  • Height: 398 mm (15-11/16 inches)
  • Weight: 11.6 kg (25 lbs 10 oz)

This amplifier works nicely as intended and is in very good condition, exhibiting only light external wear and has had stickers applied (cleanly) to either side as can be seen in photos. Power supply and footswitch are included. 


Serial Number: L9J2400



*** This item is at Five Star Guitars on consignment. As a result, all sales are final***

*This item ships fully insured with signature required*

Type: Guitar Amps