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Boss Katana Mini Compact Guitar Amp

One of the best battery-powered practice amps around!



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Product Description

Please Note: The Boss Katana Mini does not come with a mains power supply, the recommended power supply is the Roland PSB-1U.

The Boss Katana Mini has taken the practice amp world by storm. It may be small in stature but this amp is not a toy as it kicks out way more low-end than you might think!

It gives 7w of power through a 4" speaker however that speaker has been optimised for the guitar so that you avoid thin, tinny guitar sounds.

3-Channels & Delay

Most small practice amps will have a 2-channels that are barely useable. The Katana mini has 3 stunning channels that give you a lovely clean, a hearty overdrive and the all-out Brown Sound for mega gain. That means you can practice any style of music from Jazz to Heavy Metal if you wanted to. 

The addition of a basic delay is what makes this amp is nifty to practice with. It gives your tone a little bit more space and makes it that much more pleasing to the ear - especially when you're practicing those Van Halen runs on the Brown channel.

From Home To Hotel

The Katana Mini is small enough to keep at home without taking up much space or to throw in the back of your car on your next trip. Take it the hotel or your holiday destination and ensure that you'll always have great tones on the road to practice with. Did I mention that it can be powered by 6x AA batteries OR a power supply at the wall?

Cab Sim Output

Not only have Boss created a little amp that sounds great in the room but it also has a cabinet simulated output which means you can plug it directly into a recording interface and get great recording tones. The Cab Sim emulation is voiced with a bigger sounding cabinet so it'll sound huge when plugged in!


  • Rated Power Output:7W
  • Speaker: 10 cm (4 inches)


  • POWER switch
  • TYPE switch
  • GAIN knob
  • VOLUME knob
  • BASS knob
  • MIDDLE knob
  • TREBLE knob
  • DELAY TIME knob 
  • DELAY LEVEL knob


  • INPUT jack: 1/4-inch phone type
  • AUX IN jack: Stereo miniature phone type
  • PHONES/REC OUT jack: Stereo miniature phone type
  • DC IN jack

Power Supply

  • Alkaline battery (AA, LR6) x 6, Rechargeable Ni-MH battery (AA, HR6) x 6 or AC adaptor (sold separately)
  • Battery Life: Approx. 7-10 Hours
  • Power Supply: Roland PSB-1U (sold separately)
  • Current Draw: 350 mA
  • Expected battery life under continuous use: Alkaline battery: Approximately 7 hours, Rechargeable Ni-MH battery: Approximately 9 hours (When using batteries having a capacity of 2500 mAh.) * This can vary depending on the capacity of the batteries and the conditions of use.
  • Accessories: Owner's manual, Alkaline battery (AA, LR6) x 6

Size and Weight

  • Width: 230 mm, 9-1/16 inches
  • Depth: 116 mm, 4-5/8 inches
  • Height: 181 mm, 7-1/8 inches
  • Weight (including battery): 1.2 kg, 2 lbs 11 oz
Jed Van Wyngaardt author picture

Written by Jed Van Wyngaardt

Customer Reviews


84 reviews





Trusted Customer21st Dec 2023

The sound from this mini practice amp is impressive.

Value 5Looks 5Durability 4Sound 4

Mr Will Turner19th Dec 2023

Overall a nice little practice amp. I would recommend this product. Be advised, this amp does not come with a dc adaptor, and is battery powered out of the box. Aesthetically, the amp looks quite cheap, but functions well aside from this.

Value 5Looks 2Durability 4Sound 4

Mr Daniel Rushton8th Oct 2023

Surprisingly good for its size. Great for late night practice.

Value 4Looks 5Durability 4Sound 5

Mr Andy Robinson26th Aug 2023

Value 5Looks 5Durability 5Sound 5

Mr Tom Hendriksen25th Aug 2023

Actually really surprised at how good this sounds - for something the size of a lunchbox it’s pretty impressive, and a great little starter amp

Value 4Looks 4Sound 4

Trusted Customer15th Jul 2023

Needed a small battery-powered amp for a specific situation where I can't sensibly use a powered amp and battery pack. This should fill the bill.

Value 4Looks 5Durability 4Sound 5

Mr G Sujeet4th Jun 2023

Should have had bluetooth, it's a big miss

Value 4Looks 5Durability 5Sound 5

Trusted Customer31st May 2023

A fair price, straightforward online ordering and prompt delivery.

Value 4Looks 4Durability 4Sound 4

Trusted Customer17th Apr 2023

Value 4Looks 5Durability 4Sound 4

Mr David Craig20th Feb 2023


Value 5Looks 5Durability 5Sound 5

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Andertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.