I feel somewhat embarrassed, because the comment you replied to is many years old, and my opinions of the Senns have changed quite a bit since then, ever since I started amping my HD600 with my speaker amp. The Mjolnir I had was rather sterile sounding, I realized. The Senn just really needs an appropriate amp to get it to sing. I reckon an output-transformless (OTL) tube is the name of the HD600 game. I haven't tried that pairing yet, but the HD600 does sound quite nice through my speaker amp. Not quite as nice as my Sundara, but still nice. The Sundara has much roomier, taller soundstage. The HD600 has a flat (no height) soundstage, but can still be precise within that plane of sound. It also lacks bass and especially subbass, which is a big deal to me. The parametric-EQ'ed Sundara when powered with my speaker amp is just as organic and natural sounding as my HD600, but it also feels more immersive/enveloping. Perhaps if I get my hands on an OTL amp I might love the HD600 even more. Right now, I'm so satisfied with my Sundara setup that I feel no desire to try anything different. I've found my "endgame."
Hello there.
Truthfully, I didn’t realise that your post was that old, as I had merely noticed the very last post, dated yesterday. While I don’t want to knock your personal experience with the HD 600, your reply reads as if you are another person altogether from the one who wrote those posts almost 4 years ago. No disparaging intended…
But to be fair, my criticism of the HD 650 is certainly more vehement than that of the HD 600. I have had the latter in my possession for a few weeks (an Original Ireland production), and I didn’t think it was that bad, and certainly a notch or two over the deeply mediocre HD 650, based on an even shorter run with a relatively early production example. I was so underwhelmed with the experience, that I never felt tempted or even curious to get back to it.
My problem with it (them) isn’t so much the lack of Bass extension, as I’m not usually too bothered with the ultimate Bass quantity or indeed extension, but rather the Bloated, Slow quality of said Bass, especially obvious with the HD 650, and of course that infamous Veil over the Upper Midrange and Treble. Again, especially true with regard to the HD 650.
A comparative listen to their superb predecessors, both the HD 540 (preferably the origInal 600 Ohm version), and the HD 560, painfully exposes their shortcomings. The differences are striking, and certainly not in the HD 600/650’s favour!
As far as I’m concerned, the path that Sennheiser chose in the development of their (then) Top Models is hard to comprehend, and I certainly don’t regard either design as true High Fidelity. I suspect that Mr. Grell had something to do with it, and it’s probably no coincidence that his entrance into Sennheiser’s fray marked the beginning of their decline in terms of Engineering values, rather than the Marketing side, which saw a considerable push.
I can appreciate that you were able to extract better performance out of the HD 600 by running it with a Speaker Amplifier. It is also my experience that Vintage, High-Impedance Cans can perform at their best with a good Integrated Amp or Receiver, and this is especially true for 600 or even 1200 Ohm Headphones. I’ve run my original HD 540/600 pair, purchased back in 1987, with a humble but good Technics Receiver with superb results, and later on, throughout the 1990s, I ran my HD 560 Ovation (MK1) with a couple of Power Amps and a QED Adaptor Box. Also with excellent results, and I can vouch for the fact that both exhibited more body down Low and a smoother overall balance when driven by these Speaker Amplifiers than with Dedicated Headphones Amps.
Among the latter, I would say that Lake People/Violectric are among the Best, if not The Best, of the Solid State breed. I still own a LP G100 and a Violectric V100, which I have in permanent rotation with Two other Amps, as well as a vintage Crown D-75A, which is simply superb in the capacity of a Headphone Amplifier, especially so for High Impedance Cans, due to its immense Power Reserves. Highly recommended, too.
Happy listening!