This is used for double bass and also on occasions mandolin. I would say after experimentation one can control any feedback problems associated with acoustic instruments
of all types. The sound is as good as anything else out there and much better than many.
It does take a bit of work to get the sweet spot of delectable tone that this pre amp is capable of and a bit complicate to adjust on the fly but not impossible. I fing it very hard to choose between this and my Fishman Pro bass 11.