There are some really good car stereos on the market, which will be a huge upgrade on the stock stereo that you’ve already got inside your car.
I have installed many units for my customers, most of them are aftermarket stereos made in China, the most impressive one is XTRONS, very good workmanship. You’ll have the ability to connect your smartphone or media player to the car stereo via either Bluetooth, AUX, or USB. Normally i install 3-5 XTRONS unit every month, XTRONS model PBX79HGT is perfect match for Alphard.