using roland sp-555 for effects

DJ Gear & Hardware Hardware: Controllers, Mods and Gear
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using roland sp-555 for effects

I’ve had a roland sp-555 mixer for a while now and it has great built-in effects, recently updated my mixer with an Ecler NUO 3.0 which has send/receive compatibility. Bought that to use my sp-555 for external effects. Wired everything properly and now have no idea how can i apply effects? I mean i get sample sounds when hitting pads, and i can apply effects to these pads, but how can i apply effects to my mixer channels.

Thanks in advance.

Ecler NUO 3.0
https://www.musicstudiodirect.com/shop/secure/images/products/9430.jpg
Roland sp-555

SP-555
SP-5551114×1050 260 KB

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someone, please?

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Just realized it only works with vinyl, for some reason effects cannot be applied to digital signal. Anyone know why is that?