Mooer SD50A Acoustic Guitar Combo

I like the idea that it has everything in it. Basically it is easy to use and will be used on small gigs. Effects are pretty ok.
Sound is a bit plastic but so it has been in every acoustic amp I've ever tried, so nothing new here. I use it with L.R. baggs preamp and it makes the sound more natural.
The looper loops both guitar and vocals at the same time and I don't know if that can be changed? The manual is poor in this part. I'd like to just loop the guitar if I play live and do a little soloing over after a verse, but on the loop there's also the vocal part so I can't use it that way. The drummer is quite silly and useless.