Just as the CUBE guitar-amp family received an XL upgrade, now it’s time for the CUBE BASS line to reach XL status. The new CUBE XL BASS amplifiers remain portable and travel friendly, a CUBE tradition, but they benefit from new-generation XL performance enhancements. These new amps deliver a knock-out punch with custom FFP and COSM technology. FFP is one of Roland’s core technologies in which each component — amp, cabinet, and speaker — achieves maximum efficiency and performance for incredible power from a compact body.

The most portable of the family, the CUBE-20XL BASS, features 20 watts of power, an 8-inch custom speaker, six COSM amp models, pro-quality effects (Reverb, Delay, Chorus, Solo, Poly Octave, Compression, and Overdrive), Power Squeezer for big sound at low volume, and 3-band EQ.



  • Ultra-compact 20-watt bass amp with custom-designed 8-inch speaker
  • Six COSM amp models onboard
  • Seven effects, including the new DRIVE and POLY OCTAVE
  • POWER SQUEEZER for big, rich sound at low volumes; great for home practice and other volume sensitive environments
  • Three-band EQ for fine-tuning your sound
  • Built-in bass tuner


                    Rated Power Output

                    20 W

                    Nominal Input Level (1 kHz)

                    BASS INPUT: -10 dBu/1 M ohm
                    AUX IN: -10 dBu


                    20 cm (8 inches)


                    POWER Switch, SHAPE Switch, TUNER Switch, POWER SQUEEZER Switch
                    COMP/DRIVE Knob (COMP, DRIVE)
                    [COSM AMPLIFIER]
                    TYPE Switch (SUPER FLAT, FLIP TOP, B MAN, BASS360, SESSION, CONCERT 810), GAIN Knob, VOLUME Knob
                    BASS Knob, MIDDLE Knob, TREBLE Knob
                    EFX/SOLO Knob (CHORUS, SOLO, POLY OCTAVE)
                    DELAY/REVERB Knob (DELAY, REVERB)


                    Power, COMP/DRIVE, TUNER, EFX/SOLO, POWER SQUEEZER


                    BASS INPUT Jack (1/4″ phone type), AUX IN Jack (Stereo miniature phone type), FOOT SW Jack (TIP:EFX/SOLO, RING:COMP/DRIVE) (1/4″ TRS phone type), RECORDING OUT/PHONES Jack (Stereo 1/4″ phone type)

                    Power Consumption

                    24 W


                    Owner’s Manual

                    Options (sold separately)

                    Footswitch (BOSS FS-5U, FS-6, FS-7)

                    SIZE AND WEIGHT


                    335 mm
                    13-3/16 inches


                    327 mm
                    12-7/8 inches


                    335 mm
                    13-3/16 inches


                    9.4 kg
                    20 lbs. 12 oz.

                    PERFECT SOUND

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