Sorry for the delay in answering your question. It appears that I missed a number of posts to this forum. I have a feeling that I answering your question privately through email, but never on this list.(posted 9179 days ago)When the sampling rate of the k2500 is set to 48kHz...you are bypassing the digitech completely...no mattter which digital out you are using...SPDIF or AESEBU!! You do not need the DMTi to bypass the digitech.