I understand this product, if you travel and don't want to use a headphone, it can work.
This product is in my opinion not good enough, the sound is not for a bass, it sounds plastic. Spent 40 bucks more and you get a much better product. Or use a headphone Vox amp.
Pro:
It's small, very handy, easy to use, super cheap, battery compartment, weighs nothing.
Con:
When you put the MA-5 on the table and plug your bass in, the MA-5 will tumble over, the plug and cable are heavier.
The sound is not good enough, sounds very plastic.