Is my old audio gear worth anything (Rotel, SPL)?

I have left this stuff stored in my parents basement for decades. My parents live in the middle of nowhere, meaning they are not in what I would call a "used audio equipment friendly market". 

I'm mainly curious about the Rotel RA-1412 integrated amp and the SPL 4000 speakers since I'm guessing the rest of the gear is worthless. I'm thinking of taking everything to a local used electronics shop or pawn shop.

Any idea what this stuff is worth?

https://photos.app.goo.gl/srJ6mujy4rCYZipE8

https://photos.app.goo.gl/yFXAkZn7ZFohWQJk9

https://photos.app.goo.gl/h9CbxEnXnzJKqQoi8

https://photos.app.goo.gl/9CMnemzBhRMHBHJS7