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…..

The NuPrime AMG STA-SE power amplifier boasts a plethora of advantages that redefine audio excellence. Its unique amalgamation of Class A warmth and Class D efficiency delivers unparalleled musicality, characterized by remarkable clarity, detail, and low noise floor. With the ability to bridge for full mono operation, it offers high sensitivity and world-leading switching speeds, all while maintaining cool operation. The Special Edition version amplifies these qualities, enhancing resolution, sound staging, and overall musical engagement. Whether it’s the ease and flow of music or the transformative growl it adds, the AMG STA-SE sets a new standard for amplifier performance, making it an indispensable cornerstone of any audiophile setup.