Roland CUBE-20XL Bass Combo Amplifier (Discontinued)

88 out of 100. Incorporating 100+ ratings and reviews.

Roland continues to build their reputation in the amp market with their popular Cube series, extending their reach even to the top echelons of bass amplifiers with the Cube-20XL Bass.

Weighing in at just 21 lbs, the Roland Cube-20XL Bass remains true to the portability paradigm of the Cube series, only this one is especially designed to reproduce the frequencies needed by bass guitars with its 20-watt solidstate amp and 8″speaker.

It also houses build-in COSM technology amp models (Super Flat, Flip Top, Bass 360, B Man, Session, Concert 810), along with seven effects types that make this compact combo amp a nifty all-around practice and even gigging tool for bassists.

Effect types include reverb, delay, chorus, poly octave and more.


  • 20-Watts
  • 8” Speaker
  • Controls: Volume, Gain, COSM Selector, Comp/Drive, Bass, Middle, Treble, FX, Reverb, Shape, Tuner.
  • AUX-Input, 1/4″ Headphone-Output, Footswitch


Big words like great and amazing appear are in many reviews, most of which are from beginners who appreciate its overall quality. Sonic flexibility is also another strength of the Roland Cube-20XL, thanks to its built-in COSM amps, effects and tuner. Finally, coming from Roland’s Cube series, bassist are happy with its portability, and volume to size ratio.


There are no noteworthy complaints, other than a few who report minor rattling noise when driving the amp hard.


With its combination of versatility, affordability and portability, it is easy to see why the Roland Cube-20XL Bass combo continues to get a lot of good reviews.

This is not currently on our recommended list – to see that go to our guide to The Best Combo Bass Amps.

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