Dave did a teardown of a similar unit:
They are just awful quality.
Lol, I noticed Dave attracted some controversy when he destroyed it by stabbing the woofer.
I say good on him for doing it. The unit was unsafe so rendering it beyond use was the right thing to do, as it stops someone else from finding it, using it and burning their house down or being electrocuted.
I doubt any of the components were really worth reusing. I suppose the copper and steel/iron in the transformer and speaker could be worth recycling but only if you have a large quantity. Take the unit to your local ewaste facility and hope they recycle most of the materials.