Oops, I misremembered, it was 1.5w: https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-violectric-hpa-v281-hp-amp.9331/
Still a lot, and, yeah, V281 is a beast when it comes to power. Really helps with quietly mastered music that stays below -20dB a lot.