The stud, with support of a high profile group of New Zealand breeders, has purchased 50 per cent of the stallion who will shuttle to New Zealand from 2017 onwards.
The French-bred Vadamos combines a highly-successful sire line that has already proved its potency in this part of the world together with an outstanding female family.
He is by the German-bred Monsun, who has made a significant impact in Australia by siring three of the last four Melbourne Cup-winners - Protectionist, Fiorente and this year's hero Almandin.
"Vadamos is a magnificent individual with a race record to match. He's arguably the fastest and best bred son of Monsun to go to stud and we're delighted to have secured him for Australasian breeders," Rich Hill's John Thompson said.
Monsun is widely regarded as the best German sire of all time. His progeny includes world champion Manduro, the Queen's Gold Cup heroine Estimate, prolific Group One winner Stacelita, Novellist, and German Derby winners Samum, Schiaparelli and Shirocco - the last named an outstanding talent who also landed the Breeders' Cup Turf and Coronation Cup.
Monsun has produced an impressive 17.5 per cent stakes winners to runners, with 65 Group winners – 22 of them at Group One level - and 112 stakes winners. They are extraordinary statistics given that he stood all his life in Germany and is represented by only 754 foals.
Vadamos was one of his very best and he won the Gr.1 Prix du Moulin at Longchamp, the Gr.2 Prix du Muguet at Saint Cloud, the Gr.2 Oettingen-Rennen at Baden and the Gr.3 Prix Messidor at Maisons-Laffitte from the stable of leading international trainer Andre Fabre.
"Vadamos always impressed me with his raw talent," said Fabre, who has prepared 180 Group One winners.
"It is well documented that no other horse in my yard could beat him in the mornings and his final 200 metre time in the Moulin of 10.47s is absolutely top-class.
"Vadamos is a fantastic horse. He has loads of heart, h e likes good ground and he is a great athlete."
The winner of eight races from 1600 to 2400 metres, Vadamos was also runner-up in the Gr.1 Jacques le Marois and he ended his career with commendable fourth placings in both the Gr.1 Cox Plate and the Gr.1 Emirates Stakes after an interrupted preparation.
"He has been retired to Tally Ho Stud in Ireland and we were approached by a syndicate of New Zealanders, who loved the horse and his pedigree, to purchase and shuttle him here," Thompson said.
"To get this son of Monsun is unbelievable. He's one of the best bred Group One winning stallions going to stud anywhere in the world and he's from one of the Aga Khan's great families."
Vadamos is out of the Peintre Celebre mare Celebre Vadala, a half-sister to the Group One winner Valixir and also Vadaza, the dam of Group One winners Vazira and Vadawina.
"Sir Peter Vela, of Pencarrow Stud, Greg Tomlinson, of Nearco Stud, and Valachi Downs' Kevin Hickman are the key people in the syndicate and we've joined them with John Camilleri, of Sydney, who bred Winx and Vancouver, and Andreas Putsch, of Haras de Saint Pair in France, who both raced Vadamos," Thompson said.
"John wants to support Vadamos at stud with some of his lovely mares and he believed New Zealand and Rich Hill offered the stallion a marvellous opportunity.
"John originally bought into Vadamos on the advice of James Harron and Hubie De Bergh, and they all thought he was one of the most striking colts ever to go through the sales ring.''
Putsch also intends sending mares to Vadamos and he too is enthusiastically looking forward to his stud career.
"From day one Vadamos was the best looking foal ever and the best looking yearling ever, so I kept half of him too race," he said.
There are a limited number of shares in Vadamos available for Australasian breeders.