Sonos One vs Cheap IKEA Symfonisk: 𝐖𝐡𝐢𝐜𝐡 𝐬𝐨𝐮𝐧𝐝𝐬 𝐛𝐞𝐭𝐭𝐞𝐫? 

SONOS sounds clearer and better quality

I started with Beam Gen 1 with Symfonisk rears on LG OLED 55C1. I added a Gen 3 Sub a year later and upgraded the rears to One SLs. I really didn't hear the difference between either speakers in surround sound duties (volume in the 10%-35% range). I've since upgraded to the Beam Gen 2 and moved the Gen 1 Beam+Symfonisk to spare bedroom on LG OLED 48C2. Probably won't upgrade the One SLs/Symfonisk to Era 100s because of paying $500-$1000 for them to operate in low volume surround duties mostly.

You realize that listening to a speaker through your computer or phone speaker doesn’t tell you much eh?

inside is the same, ikea one is software downgraded.