Jun 11, 2019 · The K-Duo Essentials™ Single Serve & Carafe coffee maker can fit a flat-bottom, paper filter that is compatible with a 12-cup coffee maker. Was this answer helpful? Yes Thanks to the latest brewer innovation from Keurig®, you can have the best of both worlds! Versatile and multifunctional, their K-Duo Essentials™ Single Serve & Carafe Coffee Maker allows you to use both K-Cup® pods and ground coffee to brew a cup and a carafe of your favorite varieties.The Keurig® 2.0 K460 brewer features revolutionary Keurig 2.0 Brewing Technology™, designed to read the lid of each K-Cup® or K-Carafe™ pack to brew the perfect beverage every time. The brewer also features a large 70 ounce water reservoir, 2.4 inch color touch display, programmable clock, an auto brew option and a strength control ... Keurig K-Duo Essentials. Coffee Compatibility. Keurig has a few different coffee maker series, such as the K50s, K200s, etc. Four of these series — K200, K300, K400, K500 — are K-carafe pod compatible and can brew up to 30 oz portions with a Keurig carafe.