Is the Roland Micro Cube an all-in-one amp?

Yes, it is! From feature to functionality and even portability and loudness. Right first is portability. This amp is small and lightweight. You can just carry it and walk for miles and you wont feel the weight. You can even put it in a backpack. Second is battery operated. You can do busking with this amp, you can bring this anywhere and jam along. In a boat, in your garden, in the park, in a hotel room, literally anywhere and you don't have to worry where to plug it. The features of this amp is awesome. It has builtin effects from reverb to delay, chorus, flange, phaser, tremolo, and amp sim and even acoustic option and microphone option. It has record out which you can connect to a mixing desk, PA system or portable speaker. It has got line in or AUX in for your backing tracks. Tone knob, gain and master volume. And most of all the sound quality of this little amp is really good. Loud enough and a lot of tone variations from clean to lead tone/metal tone.