Dj Mixer To Technics Home Hifi System

Hey does anyone know if I can connect a pioneer djm 400 mixer to a Technics EH-550 HiFi System? The only possible jacks on the back of the hifi system are on the sound processor. 2 red and 2 white holes right next to each other named VCR (EXT) .
THanks!!

I didn't find the right solution

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