The Preamp is in production and will be ready to ship in about 2 weeks. The price is $4500 including shipping. There will be a factory discount for early purchasers.
A detailed owners manual is here. It did take a short while to download. In the manual is a description of the metal remote control.
I have been a very satisfied user of this company's DACs through two generations and am the OP of a long thread over at digital. I can answer questions about the company and the designer and the general quality of his work. But I am not, myself, in the market for a preamp. What I can say is that the designer is a music lover who judges each component, small and large, in his designs by listening carefully. He seems to wind up using European components far more expensive than in competing designs at the price.