I was so impressed by the quality of the sound of this little thing! It really sounds like a studio monitor. Very neutral and accurate. Very portable, light, easy to carry, even on my bike. Though I wish it had some nice, padded carry bag included, since it's designed also for the street. I used it with Rav Drum plus condenser mic - Audio-Technica PRO 35 and acoustic guitar, looper Boss RC 300 with Shure Beta microphone, as well as bluetooth or aux with my computer and phone for indoor and outdoor. It turned out that 20W is not always enough for street performance, especially with rather quiet Rav Drum, but most of very small battery amps have usually much less power. And anyway, this little guy can be pretty loud indoor and also with bluetooth. We danced and exercized with my friends in parks together with that amp, as well as I made quite many successful workshops with it (dance, yoga and other), looping and improvising live. Another great feature for such a small amp is phantom power! That was something I was looking for. Still doesn't happen often in small battery amps. All effects sound great. And really, what else do You need, if not just some good reverb, delay and extra chorus or flanger with quite big range of adjustment. The only little disturbing thing is that there is noticeable noise from effect block, but mostly in quiet rooms. I like also that main volume, eq, bluetooth are on top and the mixer with channels is on the back side, though it is not always super convenient and would be great, if channels were copied as much as possible. The volume and effect knobs are swapped in channels and it took me long time to remember that, but I finally got used to. The last thing concerns the battery or rather, what happens, when it is just about to die.. The amp instead of just turning off, starts producing some weird scary noises (first time I heard it, I honestly got scared, cause I was in another room and had no idea what that was.. ). That could be improved or maybe the amp should have some gentle warning signal before the battery dies. But, if You always charge the battery after every show and You control it, You should have no problems and the battery last for really long. There is possibility to disconnect it, when not in use! Overall, I love that amp for what it offers in such a small set up and most of all for the sound!, battery life, phantom power, simple and beautiful design, portability. Well thought through little device. Totally recommend.