Great looper that I use for practicing alone at home. One of the features that I love is visual display of the loop length which is extremely helpful, especially if you don't have any previous experience with looper pedal. Also the boss-style silent switch is great, since it doesn't make annoying click and is very easy to engage and disengage. Press once to start recording, press one more time to instantly overdub. There is an option to configure pedal to start the playback on the second tap without overdubbing, which might be useful for some players. The only caveat is that erasing the loop (hold the switch for a second) would initially playback around a second of recorded loop, which makes it not very usable in live situation, but external footswitch totally solves the problem. Looper stores in memory whatever you recorded on it even when turned off, but there is no option to store multiple loops and switch between them like using presets. Build quality is perfect like on any other Boss stompbox, it is very solid and feels like this pedal would perfectly work for ages without failing. There was no AC adapter included and I've never tried running it from batteries - I'm powering the pedal with my power supply and don't have any hum or noise issues. In overall, great and very easy to use looper for home practice, which can be extended for live situations with external footswitch.