Ali SC4

We have a 2000 LX470 and I think the amp is fried as I get almost no sound unless we crank the volume up all the way and then its very faint so am guessing thats just the signal output we are hearing.

Cant seem to find any LX470 amps here locally in Denver but wondering if the ones from the GS, LS or ES would work as the amp and plugs looks the same from what I see online?

Also if anyone has a functioning one they are not using and would sell please let me know.

Thanks,
Ali