Nothing is New, Much is Bespoke Commission Design and Build, A Proportion is Branded Items acquired as a used purchased, but changed quite substantially to the OEM when it was originally being marketed, the PSA PWT is the only device that is a used purchase and remains as supplied OEM Standard.
I walked away from the New Purchase Branded Item Market in the Mid 90's and have been having great experiences building relationships in other places.
In the 90's one of my best audio support was from HiFi Confidential nr Victoria Station in London. When Luigi Left the business, it was very difficult to find the knowledge he had at other outlets, sales were the goal not teaching somebody where monies were to best placed as Luigi did with Great Aplomb.
If Luigi is looking in, I am still into Audio as a result of the early nurturing from yourself. This little Acorn did become a Tree with good set roots.