4K headphone + headphone amp/dac system recommendations please

I’d recommend looking at Sennheiser headphones and Woo headphone amps. I’ve had a top of the line headphone system for decades following the improving technology. Woo offers outstanding sounding tube based amps so you can get the power and warmth of the real thing. Ive used at least a dozen other amps. 

The key is the electronics you back them up with. You can see my system under my USerID. It is by far the best system I have ever hears. All the electronics mater. As an initial step I would put $1K into headphones and $3K into the amp... consider used. For instance if you were able to get a used WA5 and then some good 300B tubes you will overcome any lack of warmth from your DAC. Then sometime down the road you can invest in a different DAC and Streamer. 

It is just as difficult to put together a great headphone system as it is a main system. I think my ratio of headphone cost to electronics supporting them is 1 to 8. So eight times more cost in the electronics than the headphones. 

One of the draws to Violectric is they are very high current amps. I have one... that is good. Many headphones amps do not have the current to drive all headphones. Current from solid state amps is similar to main systems... the more the better. Violectric  dones not have a warm fleshed out midrange... which is really where a lot of the power and realism comes from. On the other hand... it is a system and every component counts.

@mulveling 

I hate their newer HD800 and derivatives. Such unnatural sound

I was most unimpressed with Sennheiser headphones I heard a couple of years ago, but I just put it down to me.  Can you elaborate a bit more, please?

@ghdprentice 

"Just as difficult"... yes; that's becoming clearer as I read through all these comments.

It does seem like Sennheiser would be worth exploring as a starting point but more importantly, comments seem to suggest that my disinclination to go with tubes renders the entire enterprise a non-starter.

Given what you’re looking for, my strategy would be to get fairly neutral headphones and pair them with a good tube amp like Quicksilver or Woo Audio where the ‘phones just pass all that tube goodness through.  I’ve got the Arya Stealths and they are very neutral with tight/quick bass and very good imaging/soundstage, and although they are quite detailed/airy up top they don’t get harsh using a Class-A solid state amp.  My take is the HE1000s might be a little more detailed up top than my Aryas, but with a tube amp this still may not be an issue, and you can buy them on Amazon and return them if they don’t work out.  If you really wanna stick with solid state I’d look at something like this Pass HPA…

https://tmraudio.com/fresh-arrivals/pass-labs-hpa-1-headphone-amplifier-nzg9/

Just some thoughts FWIW, and best of luck. 

I was most unimpressed with Sennheiser headphones I heard a couple of years ago, but I just put it down to me.  Can you elaborate a bit more, please?

HD800 sounds sterile, dry, lean, bright & uninvolving to me. HD600 and 650 are musical and warm (less so for HD600). HD800 is technically better (more detailed) than HD6**, but not by much - and the latter are far more musical. Furthermore, electrostats spank HD800 in detail & low distortion, plus they’re more musical to boot. So I never "got" where this headphone fits in. 

I was looking forward to Sennheiser’s long anticipated successor to HD650, and when I heard HD800 it was like a cold wet blanket. Adding insult to injury, its design was a shameless & blatant ripoff of Sony’s prior SA3000, SA5000, and Qualia 010 models. Those Sonys were TRULY a novel design upon release, but quickly ended as commercial failures (utterly). However flawed (and they were - weird midrange), they were also quirky & beautiful in ways the HD800 can’t touch IMO. HD800 fixed the Sonys’ midrange a bit (not all the way) and lost ALL the magic that made them special in the process - an exquisitely engineered mediocrity. Also Sony’s build quality and materials were far better (SA5000 and 010). It was especially galling that when Sennheiser released HD650 as its then new flagship (2003), they made a big deal about voicing it for warmth and natural musicality, more than its predecessor HD600. Then with HD800 they went totally the OPPOSITE direction and then some. 

The HD800S revision supposedly corrects the brightness, but I was long past the point of caring when it was released. A couple years ago I got to borrow a HD820, and its sound quality is embarrassing for its cost. Perfect example of a designer being too clever for his own good, with the concave glass windows (wtf). 

You can amp the HD800 into oblivion and get it to start sounding natural again, but you can also do this with 650 and I’ll still like its result better.

Thank you for allowing me to once again express how much I hate HD800 lol