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Boss Katana KTN 50 Modelling Amp – Version3

The Boss Katana 50 Combo Guitar Amplifier offers 50 watts of pure power though a custom made 12-inch speaker, delivering redefined rock sounds with a range of gig worthy tones. With the ability to use three effects at once, and five unique amp characters, the Katana amp provides a range of tones that you can shape to suit your playing style. The amp also features dedicated controls for quick sound adjustments, and a built in tilt stand for monitoring and sound projection. With a range of 55 customisable boss effects to choose from and an innovative power control, the Katana 50 combo amp is perfect for gigs, recording and practising at home.

The Katana Series

The Katana Series of Amps from Roland’s Boss division embodies their pursuit of finding the ultimate rock sound, calling upon years of research and design to deliver redefined rock tones. Built using traditional craftsmanship with new and innovative designs, the Katana amps offer class-defying tones with an excellent touch response and presence. Taking inspiration from the Japanese sword of the same name, the amps provide a smooth, cutting tone perfect for gigging musicians, as well as for recording and practising.

Choose from Five Unique Amp Characters

The Katana Series features a selection of five original and unique amp characters, offering a range of tones from organic, vintage tones to modern, high-gain sounds. When set to clean, the Katana produces a beautifully natural and transparent tone, producing the raw sound of your guitar or pedals. Crunch will produce a satisfying grit and response tone, while lead offers a wide gain range that suits many musical styles. The Brown amp character comes from Boss’ Waza amp series, producing refined, high-gain tones. The acoustic mode enhances the Katana’s versatility, allowing an electro acoustic to be plugged in, optimising its tone to create an amazing sound.

Innovative Controls and Built-In Boss Effects

The Katana Combo Amp features a range of built-in boss effects that can be customised though the free Boss tone studio editor software. With 55 customisable effects to choose from, and the ability to load and keep 15 effects on board at one time, the Katana can use three effects at once to offer a range of tonal possibilities. A selection of powerful controls and tone settings can be used to shape the amp’s sound, with the ability to store and recall your favourite amp and effects settings.

Traditional Craftsmanship and Breakthrough Functions

Pooling their years of research and design into the Katana amp, Boss has combined the use of traditional craftsmanship with innovative and breakthrough functions to create an incredibly powerful amplifier. Featuring a proprietary circuit design, meticulous tuning, and an innovative power control, the Katana can achieve cranked up tones while being at low volume, perfect for small gigs and practising at home.


50-watt Combo Amp with a Custom 12-inch Speaker Make It Perfect for Stage and Practice
Features Five Unique Amp Characters: Clean, Crunch, Lead, Brown and Acoustic
55 Customisable Effects with the Free Boss Tone Studio Editor Software
Store Up to 15 Different Effects on Board, Ready to Be Called Upon When Needed
Dedicated Gain, EQ, and Effects Controls for Quick Adjustments to The Amps Sound
Two Memory Banks for Storing and Recalling All Your Amp and Effect Settings
Power Control for Achieving Cranked-Amp Tone and Dynamic Response at Low Volumes
Built-in Tilt Stand for Optimal Monitoring and Sound Projection


Power Output: 50 W
Nominal Input Level:
Input: -10 dBu (1 M ohm)
Aux In: -10 dBu
Speaker: 1x 30 cm (12 inches)
Power Consumption: 47 W

Main Controls: Power, Master, Power Control switch (Standby, 0.5 W, 25 W, 50 W)
Amp Type Switch: Acoustic, Clean, Crunch, Lead, Brown
Controls: Gain, Volume
Equalizer: Bass, Middle, Treble
Multi Effect: Booster/Mod, Delay/FX, Reverb, Tap
Tone Setting: CH1 and CH2 button, Panel button


Input Jack: 1/4-Inch Phone Type
Aux in Jack: Stereo Miniature Phone Type
Rec Out/Phones Jack: Stereo 1/4-Inch Phone Type
Exp Pedal/Ctl Ch1/Ch2 Jack: 1/4-Inch TRS Phone Type
USB Port: USB B Type
AC in Jack

Width: 18-9/16" (470mm)
Depth: 9-3/8" (238mm)
Height: 15-11/16" (398mm)
Weight: 11.6kg

Owner’s Manual