The MVH-S322BT is designed to accommodate the Smartphone lifestyle. When using Pioneer Smart Sync with Amazon Alexa it opens a new world for this Digital Media Receiver. Using this application, you broaden your access may it be wired or wireless. The receiver had a built-in amplifier and is equipped with two RCA pre-outs at 4V each. It has a 13-band customizable graphic equalizer and when utilizing Pioneer Smart Sync increases to 31 bands. The crossover network for this receiver is Standard Mode only. Features include Pioneer Smart Sync App with Amazon Alexa, Bluetooth®, and USB direct control for iPhone®.