For my 10x14 foot wood shed workshop (rockwool insulation with 1/4” paneling) I have the below setup which sound really good and is connected via a cheap mini pc (a little slow but works for basic research, Pandora or Amazon music and also youtube videos), new 19” led monitor, and a used stereo receiver. The Polk speaker are attached to the outside of the shed.
Beelink MII-V Mini PC,Quad Core Intel Celeron Windows 10 Ultra-Thin Mini Computer
Pioneer SP-BS22-LR Andrew Jones Home Audio Bookshelf Loudspeakers
Pioneer SW-8MK2 Andrew Jones 100W 8" Powered Subwoofer
Polk Audio Atrium 6 Outdoor Speakers