RE: Headphile Senn v2 Black Silver - it is a very good cable, which adds clarity to the Senns. If you're looking for a bit more neutral sound, with the impression of greater speed, detail and clarity, it helps. If you're looking for more warmth, it doesn't. It's similar to most other silver cables. Though, I personally prefer the RAL Cryo-silver Senn cable - really wakes them up. I don't know how it compares to the Moon Audio silver cable - I would expect it to be very similar. The Blacksilver cable is a bargain. I also don't know how it compares to the Equinox, though I would expect the Equinox to be a bit warmer, richer than any silver cable - more like the Cardas.
The "new" HD650's don't seem to need a cable upgrade, as much as the "old" HD650's did - they're much brighter, faster, clearer than the "old" version was - without the "veil." You may find that you won't need a cable upgrade, if you've got an amp and source that mates well. And... you can always remove the foam liner, or replace it with a thin nylon material to brighten them up, if need be.
I've not heard the NuForce HDP amp - can't help you there. Though, I would say... I find the "new" version of the HD580/600/650's to sound great out a very modest SS amp (e.g. the socket out of my Marantz SA8001, the socket out out of my Monarchy M24 DAC, and my portable Shellbrook MaxiMoy, etc.). I would be very happy to have nothing more than the Marantz SA8001 (SACD/CDP & integral headphone amp) and the "new" version of the HD580/600/650's - the combo is fantastic.
As far as technology changing... I wouldn't be so quick to adopt so-called "new" technology. I think you'll find very few amps will sound better than some "old" technology in the Woo and MAD amps... or... the DecWare amps... or... the Leben... or... any number of others. The same is true of sources... very little will sound better than the SA8001, or the M24, or vinyl spun by the Linn LP12. As you experiment... you will find... that to be true. Although... I would be the first to acknowledge that variations between electronics are typically very subtle - there are just not dramatic differences as the prices escalate. Or, you must appreciate "nuance" more than most. It's far more important that you match components well (e.g. impedance, current, voltage, etc.), than worry about which discrete amp, or source, or phones are better than another.
And... I should add... that everyone has different tastes and preferences, which will ultimately determine which setup they prefer (i.e. stats vs dynamics vs orthos, etc.). One person who appreciates musicality and realism in a jazz, or acoustic performance will appreciate Maggies, far more than another who appreciates the drive and detail in hard rock, or electronic performance presented by Revels, or Vandersteen's. I'm more of an analog / tube / Maggie guy - I crave rich, warm, realism over the cold, precision of other setups. A little "first order distortion" can make a big difference in the realism presented.
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Gradofan,
I've seen your profile. Quite impressive.
You noticed that you have the Headphile Senn v2 Blacksilver cable. I want to ask if that is better than the Moon audio Silver dragon for the 650s.
Also i want to know if the Stefan Art Equinox cables are better than the silver ones for the HD650.
Btw I've just bought my 650s. They are the newer version.
Have you got a chance to hear the 650s over the HDP ?
Technology changes so fast these days. Maybe the Woos were the best some time back? I've read that the HDP beats several higher prices DACs and that we cannot get any amp better than this which is near its price range (which is 450$).
