@helpfull16yearslate +1 for attitude
@doctoru used Audioengine A6 powered speakers? Not sure would fill the garage but would work great for sitting on the couch, asssuming it’s within 15 feet of your TV. My son’s pair play loud enough (with clarity) to drive me out of his 15’ x 15’ room. Have all the connectivity and remote control options you could want, and no need for a dedicated source if you don’t want to deal - can just stream tunes off your phone
Have to admit, some cool old stuff, and $500 in the pocket, could be great. Check out Oaktree Vintage Audio and Sounds Classic - I haven’t dealt with either of them, just know they have wild selection of cool stuff from the late 70s/ 80s /early 90s
Tell us what you decide and enjoy!
Have a great day