KEF R300 Test The British company KEF, like its biggest competitors, has always had excellent products in the middle segment. Due to the great prices, more attention has always been paid to the C and Q series, but the R series actually offers top quality for not so much money. Today we do KEF R300 review. The R Series consists of as many as ten models. The last member of this family is the R50 model which is used in Dolby Atmos systems. There are three more stand-alone models on offer, the R900, R700 and R500, two compact models, the