Yeah, that's the new higher power model; if I were buying today that's what I'd buy, but what I've actually got running in "production" are two amp+ units. The amp+ have only one foible that I detected which is that if your powersupply is insufficient they can starve the Pi of power. This isn't immediately obvious but happens when you turn up the volume
The answer obviously is to get an adequate power supply, or hard limit the volume.
One of the selling points of the Amp2 is that it (allegedly) does a better job of powering the pi itself allowing for more peripherals, so presumably it should also handle the "brown out" scenario more gracefully too.