Review: BenQ EW3280U 32-Inch 4K HDR Entertainment Monitor With HDRi Technology The BenQ EW3280U is a 32-inch “entertainment monitor” that does it all. It features a 4K panel with proprietary HDRi technology for picture optimization, AMD FreeSync support, and custom treVolo 2.1 channel audio. All wrapped in a minimalist and eye-catching metallic brown package.