The sound quality is not the best on this machine, but for the price paid I wasn't expecting much. I ordered a karaoke sd card for this machine and when I click to play a song, I get this message, "LRC and .MP3 song title must match to show lyrics" And no lyrics will show as the music plays. I paid more for the SD card than I did the Karaoke player and it is very dissappointing to not be able to see the lyrics. It only plays the music. One of the main reasons I purchased this machine was because it had the SD card slot and that I could order more songs for it, but it does no good if the lyrics won't be seen. The screen is also very small. You have to be standing/sitting right in front of the machine in order to be able to read the lyrics.