I would be happy if you all spread the word. The more the merrier.Sounds like the perfect location! Maybe we can also invite people from southern germany?more head-fiers=more awesomeness
HE90 and its amp is now selling on Ebay Germany, here is the link, seems to be coming from a reputable seller, current bid price 10k eur.
Welcome. It's great to see our Swiss forum growing,
I am about to get all data soon and will share with you asap. Also I will make a Doodle. Was planning one day at a weekend in either September or October.so where is this studio and how are you gonna define the date?
, from the Zürich Lake Side area
I was auditing the Hifiman Shangri-La, when it had been available at K55. Source was the Chord Dave. Despite being an insanely expensive combo (for me), it was the reference audio experience. The soundstage was so wide & deep and you could hear the finest details - even tracks I know inside out unveiled additional structures I had never experienced before. Nonetheless, having a quality DAP & good IEMs gives me similar joy, wherever I want. That's (almost) priceless too.
Thank you for sharing your experience. Did you have a chance to compare it with HE-1? I know K55 had them once both at the same time.I was auditing the Hifiman Shangri-La, when it had been available at K55. Source was the Chord Dave. Despite being an insanely expensive combo (for me), it was the reference audio experience. The soundstage was so wide & deep and you could hear the finest details - even tracks I know inside out unveiled additional structures I had never experienced before. Nonetheless, having a quality DAP & good IEMs gives me similar joy, wherever I want. That's (almost) priceless too.
Oh I see! I have heard HE-1 on two occasions (total around 5 hours) and plan to spend the same length of time with Shangri-la in a month or two, really curious how those two systems fare. Talking to K55 folks, they told me that HE-1 was better to their ears.No, unfortunately not.
The law of demising returns in hifi
The fact that Sennheiser takes great effort to maximize the synergy between the headphones and the amp will hopefully culminate in the performance of the HE-1. Anything else would be a disappointment to me. I'm certainly looking forward to your experiences and insights. 
Especially in conjunction with a Bartok! A stunning setup, I can imagine.
You are more than welcome to come over and listen to my setupThe law of demising returns in hifi
I have the biggest trust in the skills & the experience of the K55 team and in their verdict. If I had to perform a blind buy, I would definitely rely on their judgement. Luckily I don't have to. And besides, I would already be a happy bunny with "only" your AIC-10 - no need for further upgrades for me, I'd guess...
To my personal music taste, what I have built sounds better than HE-1, I know it sounds "impossible", as one person cannot be as good as a whole company, and that is absolutely true - I am just commenting that to my ears, Bartok + 1266 (without Riviera) sounds better for EDM (expansive 3D soundstage, very resolving and fast), yet I have HE-1 for fixing 1266's mids, which by default are very cold and recessed. I was surprised how good HE-1 bass was (not as good as 1266), but the biggest difference is the mids (liquid, lush and luxurious, still a bit better on HE-1 than on AIC-10 + 1266, but damn close). I even tried Susvara, which is known for good tonality (especially mids) but did not like it for lack of resolution (compared to 1266). As far as HE-1's detail retrieval goes, I was expecting more, but from friends who own one, they told me that HE-1 requires a better DAC (Dave or Rossini for example). Now I am curious how Viva Egoista STX with Shangri-La Sr would sound!
