I stumbled to this on-line, Harmony Design's Ear 909, fully balanced/bridged headphone-amp.
More info here:
Harmony Design calls it kompromisslös hörlursförstärkare, uncompromising headphone amplifier.
Its made in Sweden.
Price: 16.000 Swedish krona (1.760 Euros / 2.400 US Dollars)
I live in Gothenburg Sweden, and Harmony Designs's factory/shop is located 30km from the city. I just might make a visit (from their web-site: You are welcome to visit us and listen to our products after the booked time).
If you have experiences of this amplifier, please post it here.
Here ar all the pics that I found online: