The WORST Components for Rock and Pop Music

Like many of you, I enjoy a wide variety of music.

Although there have been a few threads on topics like: "what speakers can really ROCK" etc, I have not found them to be very useful, as many of the recommendations would not suit my other preferences in music.

So here is an interesting and hopefully thought provoking way to look at this dilemma from a different perspective:

What components or systems, have you owned and loved, UNTIL you tried to play your favorite rock and roll or pop music?

What audiophile components would you recommend for everything BUT rock and pop?

For me, this brings back a memory of the CES show, circa 2004 when I was really excited to hear a gigantic pair of Sound Lab speakers.

They probably would have sent shivers down my spine with Patricia Barber, but with Jim Morrison and the Doors playing Peace Frog, I stood up and left the room.

Thanks for any thoughts or ideas.