Hi all. Noob 'ere, so be gentle. So, got me a a 2012 Yamaha rxv675 around 2015, well regarded amp, with 4K abilities, the blurb said. Later 2017, decided on Sky Q for the 4K. Engineer rocks up, tries to connect sky box to amp, and box says, 'do one'. Sommat to do with the HZ I believe. Anyhoo, long story short, anyone gimme some models of amps that deffo connect to Sky Q with full 4Q please? Pref under £600?