Roland Micro Cube Bass RX Bass Amplifier Roland Micro Cube [Product Information] The Roland Micro Cube Bass RX is a compact yet powerful bass amplifier. It operates on batteries or an AC adapter, allowing for easy playing anywhere. With COSM technology for amp modeling, it can reproduce a variety of sounds. Furthermore, it features four high-performance speakers, providing rich bass tones. Key Features Amp Models: Super Flat, Flip Top, B Man, T.E., Bass360, Session, Concert 810, Octave Bass Effects: Chorus, Flanger, T-Wah, Delay, Reverb Power: 6 AA batteries or Roland AC adapter (sold separately) Inputs/Outputs: Headphones/Recording Out, AUX IN, Foot Switch Speakers: 4 x 10cm (4 inch) Output: 5W (2.5W + 2.5W) Size: Approximately W296 x D207 x H294 mm Weight: Approximately 6.5 kg It can be powered by batteries alone, allowing for cable-free use outdoors or for street performances! I purchased this on this site and used it a few times in my room. I'll include 6 AA batteries as a bonus! Please buy it.