Một số bo mạch chủ có vấn đề về âm lượng
Due to the shortage of sound card chips on the market, some projects have resorted to using USB sound card chips as substitutes. These can only support 3W power at 4 ohms, whereas Realtek sound cards can handle 5W at 8 ohms. Vì thế, Realtek sound cards produce slightly louder audio.