While awaiting parts for the Proac clone to arrive, I finally had the need to make the following for myself (after making a few for clients).
It's a simple interface converter to enable old Quad models to be connected to other equipment. Pin-outs are at http://myoldvintagehifi.blogspot.sg/2012/02/bi-amping-quad-303.html
|Plastic case from EBay|
|4-pin DIN for Quad pre/power amp connectivity to RCA|
|RCA from Ebay|
|Solid core copper cable used for connectivity|