[04/26/2018] Yamaha TSR-5810 7.2聲道影音擴大機，支援4K超高畫質訊號，Yamaha TSR-5810 7.2-channel 4K Ultra HD Network AV Receiver (Certified Refurbished)，重整機，特價只要$249.99 USD。Prime境內免運費。哪裡買: Woot via amazon。