Sony CDXGT575UP CD/MP3 Car Stereo Receiver with Front Aux Input Pandora Control Dynamic color illumination With a PAIR of Sony 5 1/4" 3-Way 230W Speakers
I don't know whether Sony has decided to protect their speakers or what, but there's no base to speak of.  I'm out of the early Motown era, and like a heavy base, low treble sound. (There is no treble) If that's what you like, this isn't the radio for you.  It has very little sound control.