The geNX is a powerful engine. It powers both the 787 and 747-8. Me personally would like to hear this on the 748 since more carriers use RR Trent 1000 engines on the 787. Here’s what they sound like: https://m.youtube.com/watch?v=Km1Di25DZ9A
Overall they are really quiet and big.
PS: I couldn’t find a topic of these. However if someone ends up finding one, lmk ASAP so I can request closure on this one. Thanks!