Although the Sonneteer Alabaster may be underpowered for the Harbeth M30.1, the speakers are still not the best for rock n' roll. As a matter of fact, the 30.1s are the worst speakers in the Harbeth line for rock n' roll. They are cut out more for smooth jazz and small ensemble music.
For some rock n' roll, you might want to try the Compact 7ES3 and Super HL5 Plus. These are more of an all-rounder, much better than M30.1 with rock music.
For some rock n' roll, you might want to try the Compact 7ES3 and Super HL5 Plus. These are more of an all-rounder, much better than M30.1 with rock music.