Need help hooking up rack mount unit to UR44

Hi

I am using Cubase AI 9.5 Elements with the UR44.

I am trying to hook up a send and recive from my UR44 to my Antares Rack Mount autotune (AVP1). I know this is very old school and that therer are great plug ins out there that do the same or better, but I want to use my AVP rack mount as well.

I used 1/4 Cables to run the connections.

I sent a Line Out from the UR44 Output 4, to the Line In of the Antares Rack Mount autotune (AVP1). I then sent a Line Out of the Antares Rack Mount autotune (AVP1) to Input 6 of the UR44.

Upon doing this, i got a terrible squeal. I quickly fired up the UR dsp software mixer, and foudn the the squel was coming from Slider #6. I quickly turned that slider down and the squeal went away. But when i inch it back up, the squeal returns.

Did I wire this or configure it wrong?

I am trying to hook up the Antares Rack Mount autotune (AVP1) so i can use it as a send/return unit from within Cubase, but it’s squealing.

Any help would be much appreciated. Thank-you for your time and expertise.

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