Is it fatiguing? Assuming it acts like I think it does, it seems like something that may drive my left ear nuts (my left ear has a habit of cracking just like broken headphones and sometimes kind of lowering the volume level like reducing the amount it can take in before cracking, it's usually related to sudden volume bumps mid song, or certain frequencies shooting up, I haven't tried to really figure it out). But yeah, what you said kinda goes along with what I've been reading lately that they are very similar with only minor differences. Oh, and one more question: are they on equal footing when it comes to vocals?