Edited my previous post from last night to be a little less rambly(I hope), now that I'm not sleep deprived.
Hoping that someone can confirm that I'm not crazy.
I have no experience with the amp’s and dac’s you have tried. But when I considered a good amp to my LCD3 and HE 500 I come up with (research not listening) Auralic Taurus, HeadAmp GS-X mk2 and Audio GD Master 9. I and up buying the Master 9 and I love it. IMO it smooth, full, dynamic and has a really nice extended treble etc, etc. I’m not saying you should take my word for it and ditch the ones you have at home now, just telling you the outcome of my research.
Having just listened to a few different combos with LCDs and with diff headphones at the NY meet, I had to get to a $10,000 rig to beat my Mojo & PWD II. I think the Mojo for the 3s is generally excepted as one of the best amps along with a 'good' DAC. Usually ones reads that the Gun fits the DAC component.
Different strokes for diff folks, keep what you like, that which you think sounds best.......best advice anyone can give you i think.
I don't know about other folks in this forum, but I've had my love affair with high-end cables come and go. I went from modding with the most exotic blends of gold, silver & copper to accepting that cables are really about a couple of things:
1) Functionality (Connections, Adapters, Etc)
2) Looks (Let's be honest, DHC Cables are beautiful)
3) Ergonomics (Weight, Portability, etc)
With this in mind, I always, ALWAYS recommend working with Steve from Q-Audio. His cables are beautiful, light, and his customer service is amazing. Pete at DHC is also amazing. One of the few innovators in the industry (with his robust adapter systems, etc). If you're especially boutique, Stefan Audio Art is another cable company I have a bit of experience with. Chunky, yes, but still beautiful and ergonomic.
If you're looking for great budget cables with all these attributes, I'd say to look at BTG-Audio and HPLAudio. Talk to Chris from HPL. He's a great guy and supplies a lot of my cable/adapter needs at a reasonable price and great quality.
Just depends on what you hold most important in your cable choice. Maybe let us know what you're looking for specifically, and we can help you hone your list down.
I recently tried running my 3's straight from the XLR output's of my AMR DP-777 DAC (using the internal volume control)
Trevor from Norne Audio (used to be called Norse) made me a special cable that is Female XLR -> mini XLR (for the 3's)
It sounds great - I used to have a DNA Stratus amp and sold it in favour of this setup, The Stratus is a great amp and I wasn't expecting to sell it! I have also heard a lot of DAC / AMP combo's with the 3's (think Burson, Cavalli High end Luxman etc) - this is my favourite sound with the 3's so far.
I would recommend anyone with a preamp built into their DAC try this out.
The Ygg will probably be the only DAC I'd consider upgrading to... I have the M/G (USB Gen 2) combo and it's amazing.