Echo (delayed repeat) while talking

[blk 0]

While recording using TRx there is an "echo" for both participants -- a delayed repeat of everything said.

How can that be corrected?

[Gekker 0]

You should enter a support ticket at http://www.nch.com.au/support/supportcontact.html providing all your issue details like if the echo can only be heard while the recording is in progress or if it is also present on the resulting recorded audio file.