Roland Micro Cube Bass RX 5-Watt Bass Combo Amplifier – Optionally Battery Powered (Discontinued)

92 out of 100. Incorporating 700+ ratings and reviews.

The Roland Micro Cube Bass RX takes everything that’s good about the Micro Cube series of guitar amps and makes it available for bassists.

This amp is designed primarily with portability in mind, hence its ability to run on six AA batteries for up to 13 hours.

Instead of having one big woofer, this bass amp houses four 4″ speakers that work in unison, giving it a distinct voicing while still retaining the expected lows.

Like other Cube series amps, it comes with built-in amp and effects modeling, a total of 8 amp models and 6 digital effects.

It also has a nifty chromatic tuner and a rhythm guide, both of which add to this amp’s already jam-packed features, and make it viable for serious students of the instrument.


  • 5-Watts
  • 4 x 4” Speaker
  • Controls:
  • AUX-In and Headphone-Out


Commendations for this amp come from many different places, from professional bassists who want a good portable amp, to young up-starts and teachers who appreciate the amp’s practice friendly profile and features. It helps that you don’t get as much sonic flexibility in bass amps that are within the same price range. While portability is its strong suit, many are surprised at how good sounding the amp is.


Lack of projection seem to be a common complaint, but given its 5-watt power rating, this should be expected. There are a few who note that the amp has a bit of a hard time reproducing higher notes of the electric bass guitar.


With its practice friendly features and portability, the Roland Micro Cube Bass RX will make a good addition to anyone’s bass guitar gear.

Although this was previously on our recommended list, there are now more highly rated options available which you can see in our guide to The Best Bass Amps Under $500.

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