Turns out I can in fact get hold of DB25 to female jack looms. Seen Mogami looms on eBay. £115 each:

https://www.ebay.co.uk/itm/265050285275?_skw=hosa+db25+to+female+jack&itmmeta=01KWCV7CMFQZXQNKW3E26Y6STG&hash=item3db63a64db:g:TuAAAOSwvCpgJjjO&itmprp=enc%3AAQALAAAA8GfYFPkwiKCW4ZNSs2u11xCqGb9sgun54gYugywlHoB6epvYqT1AR5eoYFI1%2Fx%2FvfBXahv8iwFEVm7gjULZXauI2qSH0CuFS%2BezH9IfVv%2BuG%2Byf2ISHknmFaAuYn53XIV%2BpLjzPxdF%2FryCdsDWIrR7z85wjDh3NqZq1UaycivXgJ0Ezmi8FNj5xNtLwXrzSqwVjXTmH0CCEFSwbTIeDRo22dZ3n%2BJdqlIXoA%2BFGYnepqptaUOVS8S8IrNvNg3xH2KVAgGXGljqw%2Ft447oj%2F2uibgAbk7uILARYY%2BPUyT%2FyFkNO2NFHrszNQpj6BGSBaU4w%3D%3D%7Ctkp%3ABk9SR8rKnZvjZw

So they are out there, even if pricey