amp advice for desktop and a living room

(desktop setup)

I am looking for an amp that can be used for a pair of Sansui S-900 and a [](Infinity 8" Subwoofer (PS 8) (PS-8) ).

(living room setup)

separately I am also looking for a replacement amp that has Bluetooth and radio functionality for my living room to power a pair of old klipsch floor standing speakers from the 80’s

budget for desktop $100

budget for living room $100