YAMAHAがRX-V685、RX-V585、RX-V485、RX-S602を発表（700番は今年も欠番？）
https://www.whathifi.com/news/yamaha-introduces-2018-midrange-av-amplifier-range

RX-V685
https://uk.yamaha.com/en/products/audio_visual/av_receivers_amps/rx-v685/index.html
RX-V585
https://uk.yamaha.com/en/products/audio_visual/av_receivers_amps/rx-v585/index.html
RX-V485
https://uk.yamaha.com/en/products/audio_visual/av_receivers_amps/rx-v485/index.html
RX-S602
https://uk.yamaha.com/en/products/audio_visual/av_receivers_amps/rx-s602/index.html

Everything you need to know if you want to buy speakers
https://www.homecinemamagazine.nl/2018/04/alles-dat-je-moet-weten-als-je-luidsprekers-wilt-aanschaffen/