I received my setup yesterday, RPi3, amp+, 18volt power supply, etc. Assembled & burned their new Roon image to the sd card. Started roon playing at around 7 last night, left it on roon radio, its now 8 in the morning, so 13 hours straight, still playing. Sounds really good, missing a little bass, but it is only a 25 watt amp, so I expected that. I am very impressed. Also, fyi. the roon image just works, no config, unless you want wifi. Seconds after plugging it in, I saw a new Roon Ready endpoint in the Roon Setup screen, enabled and gave it a name. Started playing instantly.
Great Job HifiBerry people.