[04/28/2017] Denon AVR-S720W 7.2聲道影音擴大機，Denon AVR-S720W 7.2 Channel Full 4K Ultra HD AV Receiver with Built-In Wi-Fi and Bluetooth，內建藍芽與Wi-Fi，支援4K，目前特價只要$349 USD。Prime境內免運費。哪裡買: amazon。