Instruct: Classify the given Amazon review into its appropriate rating category
Query: Not as sturdy or as loud as the sound core nano.

I bought it as a replacement for my sound core nano thinking it would be louder since it's approximately the same size but newer. I still think the Nano is a bit louder. Also, the build quality of the Nano is way better. Hey Anker... just remake the Nano and mass produce it again. I'll find a use for the Ao, eventually, I'm sure.