What amps will you be using for all those?
I can directly compare only 3 different headphones : new Jecklin Float QA, TakeT H2+ and JPS Abyss.
I will try to use the same setup. I will use my Zotl ZH230 (recent David Berning product)
http://www.davidberning.com/,
http://www.davidberning.com/Files/reviews/Berning-ZH230-TAS-76862_eprint.pdf
+ Zotl preone preamplifier for volume control. I will use the same music source from Munkong may be Ayre DSD DAC
and some of his DSD files.
The Zotl ZH230 have 30W speaker post. I will connect the speaker post to the power supply of new Jecklin
Float to drive the Jecklin. The power supply of the Jecklin has another speaker post (for real speaker) but I will
use that to connect with the transformer of the TakeT H2+. All these connections I will use NBS jumpers (after
I have tried several jumpers including the more expesive nordost valhalla I found out that NBS jumpers is the best)
From the speaker post of the TakeT transformer I will connect with the banana plugs of the special custom made
adapter cable from speaker post bananas to 4 pin XLR of the Abyss (this cable is made of Kimber Kable 8TC and
I was confirmed that this will have minimal effect on the SQ ofJPS cable of the Abyss by JOe). I hope I can directly compare
all three headphones almost at the same time in the same setup ( I have tried that before between new Jecklin Float,
TakeT H2+ vs HE6, AKG K1000 and both the Jecklin and TakeT destroyed the HE6 and AKG K1000) IMO.