Originally Posted by Mad Lust Envy
I DO believe it does jump up in both sub and mid bass, and not just a specific mid bass bump. Unlike what Tdock has stated, I DO believe the Annie does do sub bass better than the HD650, and pretty noticeably too. The 650 does win out in mid bass, however. But again, I tested a legit Annie, not just his Q701 with a pad swap (remember me saying your Q701 w/Annie pads was brighter than my Annies?). Also tested the Annie vs the HD650, of the SA-31 and Compass 2. Also, Tdock, you've stated a few times that your HD650 is very neutral and could swear the HD600 has more midbass or something. Your 650 isn't exactly what people are expecting/experience on the regular. The 650 is known for big mid bass, with a noticeable drop in sub bass, which I also experienced. The Annie definitely had more sub bass than the 650 I tested. Not even a question.
The bass jump seems to coincide how I feel the Annie jumps over the Q701. The Annie's bass is well rounded, in both sub and mid bass. Remember, I got to test BOTH side by side, no swapping pads. That graph is pretty accurate, IMHO. You guys are reading that sub bass like it's massive. Look at the Sennheiser Momentum's graphs.
I definitely do think there are some minor improvements in sub-bass on the Annie, but it seems mostly in the mid-bass. There are some different graphs of the HD-650 out there. One of them has a little more low bass, but with more distortion. I think I might have that pair. There's a few other small differences too. This one seems to have a little more upper mids than my last pair. It's really amazing how different pairs of the same headphone can sound so different. I wouldn't say my HD-650 is "very neutral", but pretty smooth sounding with nothing sticking out. Slight mid-bass emphasis, but not bad.
The main way it's colored is that it makes most everything sound good My HD-650 clearly has a little more low-bass than the HD-600 (which I still own). I would say it has a little more low bass presence than my Q701 too. So your right that mine is a bit off the general consensus. My last two HD-650s had much more mid-bass and it was rather annoying. I actually think the Anniversary has more mid-bass than my current HD-650. Weird, I know. My HD-650 is actually even more airy and spacious sounding than this "Anniversary"(!). Not sure how that's even possible.
I still have to take it with a grain of salt that Q701 + Annie pads is 99% identical to the Anniversary. I trust you guys and now three people have said they're the same.
One thing I have to say though (sorry to derail a bit here) is that K702 + Annie pads might not be the same as the Anniversary or K712. This is assuming that every Q701 is different than the K702.
Maybe the Anniversary and this K712 really is just a standard K702 with 65th pads. K712 with the "best" hand selected drivers perhaps. This is really annoying and I wish AKG would tell us more about the differences.
My guess is that I would prefer a K702 + Annie pads over the Q701 + Annie pads. Q701 + Annie pads really does seem too congested, warm and dark. That's with a neutral amp/dac too.
I'm just adding more confusion!
I should buy a used K701 or K702 and see what the Annie pads do for it. I really wish I was made out of money and could compare them all for everyone.
Someone could get a K702, Annie, Q701 and K712 and compare and measure them along with doing pad swaps. I suggest bribing Tyll.
EDIT (more annoying comments):
My guess is that perhaps the Anniversary is not the Q701 + Annie pads but the regular old K702 + annie pads. It would make sense that you might not have been able to tell the difference.
Since my Q701 is warmer and slightly darker than the K702 it makes sense why Q701 + Anniversary pads sounds a bit too dark, muffled and congested. It almost feels like warmth overdose.
It'd be really funny if the K712 was actually warmer and bassier than the stock Anniversary.
Edited by tdockweiler - 8/6/13 at 10:48am