Amped Wireless is one of the early champions of 802.11ac, the upcoming wireless broadband standard. Today, it unveiled three new devices that’ll be available in early 2013: the RTA15 High Power Dual Band AC 700mW Wi-Fi Router, REA20 High Power Dual Band AC 700mW Wi-Fi Range Extender, and ACA1 High Power Dual Band AC Wi-Fi USB Adapter ($TBD). Yes, that’s a lot of letters and numbers, but summary point: by next year, expect gigabit Wi-Fi…