Now that the AK380 is out and the AK480 is on the horizon, the question on many people's mind is: is it worth upgrading my AK240? After all, the AK380 is defined by Astell&Kern's own maladroit marketing department as the evolution of a masterpiece (and that masterpiece itself being an end-game prodcut). If advertising copy were the measure of performance, the AK240, Be[ing] The Ultimate, couldn't be bested.