I'd be thinking a different direction, a better router.
WiFi extender needed for residence?
Can this actually improve sound quality? They're very reasonable on Amazon. I've seen some priced at less than $30. I'm not experiencing dead spots but I noticed that while streaming Tidal it will mysteriously stop at times. My residence is pretty small (1300 to 1400 sf). I'm going thru two walls to reach my Bluetooth receiver. thanks.