Even downgrading is not easy....
I used to have a set of nice stereo with pre-amp and 2 power amp. The speaker cable is as thick as my index finger. The terminus is gold plated about 1 cm wide.
Since I changed my listening habit some years ago, the nice setup was just used for TV watching. I recently replaced all the powerful and heavy amps with one Denon integrated amp. Looking at the back panel, I can see instantly the materials are much "cheaper" in the Denon. Anyway, while doing the downgrading, I saw that the Denon speaker terminus are too small to fit the speaker cable! And the cable is already wired through the wall to the speakers. I am stuck again.