Siguro nga too basic lang yung stock HU nung Vios ko kasi nung kinabitan ng X595BT ang layo ng tunog even when using the stock speakers. Now, I can hear real stereo image siguro dahil sa 13band equalization and the loudness correction and other enhancements.
Just a note to get your unit from an authorized dealer. Yan ang hindi ko natanong agad kaya yung box ng unit ko walang official Pioneer PH warranty, then pag check ko almost same lang ang price kung dun na ako pumunta at nagpa install sa authorized dealers.
I am also not sure kung may kasamang auxiliary cable out of the box dapat yung unit kasi yung calibration mic sa likod ang kabitan for X595BT so need pang baklasin now HU just to utilize the feature. Ang kinabit lang nung installer is the USB cable routed sa glove compartment.