^ I doubt cables will affect the SQ that much. But I was considering them more as a matter of convenience. The stock cable length is good enough when I am using the Burson because you need at least that length to move about freely. However when I am using the QA-UHA combo, it's difficult to walk with a long cable
. It's either on my desk or in my hand while walking. I'd suppose about 3ft of cable with 3.5mm termination should do the job just fine. I checked the cost of replacement cables and they all cost a bomb :O
I learned that my HD600 is the
older model, which means it's supposedly
not bright and clear as the newer versions. Also, according to
one poster, old HD600 and old HD650 would sound much closer than the newer ones. More on this
here. The "brightness" of new ones and the 'smoothness' of old ones may just be due to age, wear and tear though!
Considering the age of the headphones, they are in very good condition. I have them right now and ran a few test tones from the QLS-UHA combo as well as STX->Burson combo. It has a slight dip around the sibilance range (5-7Khz) and there's some drop after that too significantly at 10Khz - something this
graph corroborates. In a way, it's the reverse of CK10 with respect to 10Khz. Where CK10 had a terrific spike, it has a dip, hence the rendering of cymbals is a lot different between the two.
I am so used to IEMs spiking up the 5Khz and 8Khz ranges in order to give more 'details'. But this kind of 5-7Khz dip is very rare to come across. From memory, I have observed something of this sort with PX-80 as well as Hippo Pearl. In fact, PX80 was my primary headphone for a long while. I was so used to the sibilance free sound that I had a hard time getting used to RE0. I did not much terms back then, I was thinking 'why the f*** is he sssss-ing so much in this ear phone?'. On one hand, this ensures long fatigue free sessions, especially with sibilance prone recordings. But, on the flip side, a slight 'bite' is missing at times.
Moving to lower ranges, I don't feel much below 40Hz. With the Burson, I am able to hear the 31Hz tone and hence bass response is better with the desktop setup (may be just a question of loudness?). I wonder how HD600 will respond to EQ. If the difference between the 'old' and the 'new' driver is one of tuning, I should be able to match it with EQ by filling the dips and flattening the curve.
Edit: Did try EQ. Increasing the 10Khz and above range + a slight uptick of 1.2K, 5K in foobar "fixed" lot of things.
In general, HD600 is snappy, very balanced and good with the sound stage and imaging. I've mentioned about sound stage height a few times with IEMs, but with a headphone a sound stage height and depth are much easier to feel. Among the headphones I've heard, I knew that AD700 had width, but none so far with a well rounded sound stage like this. With certain parts in the music, I felt that I could not hear the micro-details clearly. May be it's just the infamous "sennheiser veil" people talk about.
For now, I would say this - HD600 feels a whole lot balanced, but the meat is still in the mid range. I've not heard a whole lot of headphones, so it's tough to say where I'd place it. Among the ones I have, I already like certain things better than the MS1i, though I'd like to confirm it after long hours of listening and some A:B. I feel that HD600 is somewhat equivalent to the tier occupied by GR07 and the ilk - better than most, but not
the best. I can also say that it's much easier for somebody to have HD600 as their only headphone for a long time. I'd need a bit more time to see if I can fall in that category or not.