Spare Parts for 10 Years old Devices from Cambridge Audio - where to order?

[tiefbassuebertr]

neither there nor anywhere else I find the appropriate place for ordering parts.
From Cambridge itself I don't get a reply. From the German distributor
taurus high-end gmbh
I get the information, that only the dealers can order parts.
My local dealers inform me, that there are no longer any spare parts resp. replacement parts for audio components from this brand, which are older than four until five years.
Is this really true?
In the moment I need a R-core main transformer for the integrated amp model "A3i".
Perhaps the follow company is the actually manufacturer from Cambridge Audio's custom made version:
Ring Core Electronics - Home Page
R core transformer, R core transformer manufacturer, Ring Core Electronics

[Tekko]

Couldent a toroid replace the original R-core transformer ?