If you don’t like it return it. It should sound good. If not maybe what was there before was relatively rolled off? Different strokes….. What sounds good or not is a highly subjective judgement. Or it could be defective. It happens!
Also I have started using airplay of late and that too sounds very good. Either to a Cambridge streamer or to a quite meager Roku stick. Pleasantly surprised! There is no technical reason I know of why it shouldn’t sound good if done well.