Common function of the two style:

Fold down detachable panel
Advanced electronic anti-shock
AM/FM stereo radio system
30 preset stations
Support MP4(AD-6190)
Support USB/SD playing
Repeat/Program/Random/Intro Play
Auto store memory/Preset scan
Preset EQ mode
Electronic encoder volume control
Mute/Loudness/Clock function
ISO mounting dimention
AUX input function
4 channels RCA output
High power output
Card size full function remort control(Optional)
RDS function(Optional)
Blue-tooth Function (optional for ACL-319)
And:
ACL-319 can play CD/CD-R/CD-RW/MP3, AD-6190 can play DVD/VCD/CD/CD-R/CD-RW/MP4/WMA