the reason my biggest concern is bass quantity is because when i see graphs comparing the Klipsch S4 (IEM) to the HD650, i worry that the HD650 will sound bass light because on paper it looks like it would be in comparison. the reason i mention the Klipsch S4 is because i have used them in the past and my current IEM's, the Brainwavz M2 that replaced the S4's, sound very similar in terms of bass quantity. so when i see that the HD650 in comparison has about 12db less at say 50hz that seems like a huge difference, and in reality it is a huge difference.
maybe the way they do these measurements makes it look like they have a ton more bass but in reality they dont. maybe mic placement is affecting their measurements meaning that we cant really compare IEM's to full size. the KSC75 (same driver as the UR40) in comparison also shows having about 10db less at 50hz than the S4, and that is definitely not what i am hearing when i compare the UR40 to my current IEM's.
i know it's better to try headphones out than to rely on graphs but i don't have a place local that has high end headphones to try so i figured graphs would be the next best thing.
Edited by jasonb - 11/18/10 at 8:58pm