There is no reason that active or passive is better for rock music, take most of what you hear as what they know, anyone who is street smart and not book smart would tell you so. There is no reason why solid state or tubes are better for one kind of music. There is no reason why, mono-pole speakers would be better than bi-pole or di-pole or any other kind of speakers for music. I have played with all of these toys for over 35 years and learn more all the time. I just went passive not long ago and my rock sounds great, most people that tell you that passive is not a good thing are only book smart, then there are those that will tell you that passive only works with very few amps (more of that book smart stuff) and the real answer is that most cdp source and amps on the market will work just fine, as a matter of fact, now that I know (street smart) if I had an amp that would not work with a passive I would get rid of it and get an amp that would. I would have went passive long ago if I had not read so much (book smart) bad things about passive. Well, gotta go, supertramp just finished and I have to put some more rock on.