update. turns out this baby has very little fine tuning options. no HPF/LPF , no frequency /Q control. just a bass and treble in steps of 2 db controls
i just got an Alpine 100EUB which has front USB and AUX.
True, it doesnt have any fine tuning options that you normally get in pioneer but one thing for sure is that Alpine is one such system that makes a bad speaker sound good
You also cannot change the radio channel via the remote