[HalloweenJack]

I'm going to Hamburg and I want to try the Sennheiser HD 800 (S) with a proper amp.
Can someone recommend a store in Hamburg that has it?

 

[ProtegeManiac]

Use the link below, look up contact details, and then call them up to check if they have the headphones and what amps are there. 
http://en-de.sennheiser.com/dealer-locator
 
 
Also send Meier Audio an email, see if they have any promos if you get the HD800S from them along with the DACcord (DAC+Preamp) and Classic (HPamp).
http://www.meier-audio.homepage.t-online.de/