David added a pair of Klipsch speakers to enhance the sound, but it sounds good on its own also

It provides adequate sound as a stand-alone unit, but it does have aux-out RCA jacks (along with a matching "aux-in" pair) so that I can run it into my amplifier and external speakers for better sound

Supposedly the S shaped arm available on higher models make them better at tracking warped records with less stress on the grooves, but I think it's mostly a style thing now