Yes, but DarTzeel costs $20,000 a pop.
When I auditioned my Pipedreams,the amp was the DarTzeel.This S/S unit was colored towards the warm side,a good match for the Pipes.The presentation was breathtaking.This amp is not neutral by any means.If it wasn't $20,000 I would have purchased it on the spot.
Now using 16W 211 SET colored as can be,but I love the synergy with the speakers.
Goldmund has a house sound similar to Naim.Bold, cool and detailed.
Back to neutral sound,I think the only way we can determine if a particular unit is neutral is when it is inserted in our own systems.Then if the presentation is altered in any way we will know.
I havn't heard all the equipment from Switz. to comment,its not fair to do so without first hand experience.Their cheese is not neutral.
rollo