Nuprime AMG STA-SE ($2295 USD / $2595 Euro) won HFA Award from HiFi Advice. Christiaan Punter is a highly respected reviewer who has evaluated the Nuprime ST-10/10M, AMG STA, Evolution STA, and AMG STA-SE.

Here are the notable statements from the review:

The AMG STA-SE does not fall into this trap and walks the fine line between maintaining control and stability on the one hand and providing emotional involvement on the other. This is one of NuPrime’s most alluring qualities: their Class-D products do not sound like other Class-D products.
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The AMG STA-SE is a different animal. Given its ballsy and confident yet liquid presentation, it’s perhaps more like Class A than Class A/B. More specifically, no longer Jeff Rowland-esque, in some ways, it now sounds more like a Pass Labs amplifier.
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….the AMG STA-SE sounds more natural than all other Class D amplifiers I have heard…..