I think you should pay attention on price, power, main features and design. Don't save money on sound, I recommend to buy devices from premium brands, like for example JBL.
I also can recommend to pay attention on such technical characteristics like sensitivity, output power, frequency response, appearance. In general I can say that if you want to have high quality sound you should pay for this. By the way recently i saw cool review on Merchdope about 7 Best Wireless Surround Sound Systems In 2020, these models are really good.
huter replied
269 weeks ago