Where can I buy new Cable to connect my Audio 6 Controller with the Turntables?
Thomann.de have a broad selection of cables and might have just what you need , especially if you tell them what plugs you need on the cable. You can also use cable plug select yourself at left side after having selected sub group of cables . Also Thomann in top right of interface allow you to select country, language and currency.
That's just RCA cables. Most audio stores carry them.