A lot could be said about this amp but I think there is one thing that makes it incredibly great: Customizability.
It is basically 3 different amps (vintage, flat, modern) in one box, and all 3 can be setup the exact way you want. To that you add the compression, drive, blend, 4 bands EQ, and a high-quality effects section, It can make any bass sound great with a few settings.
I highly recommend the Bluetooth adapter even though it is quite expensive, if you want to customize your settings on the go, otherwise, if mostly used at home a USB cable is enough to change the settings from your computer.
It feels very durable and built like a tank. It is plenty loud for bars and way overkill for home practice unless you use the 1W setting.
Coming from someone who's never been a big fan of Boss, I don't see me ever selling this amp, I just love how good it sounds and how flexible it is.