Pass XA30.8 vs Luxman m600-a vs Hegel H20

Pass 30.8 the best great sound very well made.

Vermeer - i dont know that model of luxman so you are right - i shouldnt cross it off the list. Was based on general and admittedly probably outdated experience with the brand in friends' systems and in showrooms. 

Thanks, Al.
Thats a relevant point and I will contact Goldenear to have a better insight into this situation. Nevetheless, I'm running them with a Mark Levinson (balanced design) and also listened to them with Gryphon (balanced as well). In either situations without problems.
One thing I noticed when I got the speakers is not only the power cords don't use the ground but that the speakers DO NOT have a ground contact (meaning that even if I use an aftermarket powercord they will not be grounded). 

Good!  So it may very well be ok to connect the speaker to a balanced amplifier.  It hadn't occurred to me that it might use a two-prong AC receptacle.  But a rear panel photo I just found via Google shows what appears to be an IEC type C18 inlet, which (as you indicated) can accept a three-prong power cord but omits the safety ground pin.

I suppose that part of their rationale for omitting the safety ground pin, in addition to perhaps double-insulating the internal AC wiring, is that in contrast to separate electronic components there is no exposed metal that might result in a shock hazard if an AC short to chassis were to develop.

Good luck.  Regards,
-- Al
 

Al,

I got feedback from Goldenear and I have nothing to fear from using a balanced amplifier. Actually they use Pass Labs amplifiers to demo the speakers very often (as was the case on the CES 2016 edition)

cheers,
João