Connecting OP1 Field to Seqtrak issues

Hi all,

I have problem connecting my Seqtrak to the OP1 Field. When I want to direct the sount from the Seqtrak to the OP1F there is the problem of singing around (like with a microphone) this occurs via USB and Line-in.
Does anyone have a similar experience and a solution?
Ps. I’ve sampled my Yamaha CLP with no problems in my OP1F and also sampled the Seqtrak in my SP404MK2 without issues, so I don’t understand where this issue comes from.

Your help is really welcome.

Sawan