EAD prepro: how's the analog passthru?

Yes, I know EAD proper has bit the dust, but I'll be receiving my upgraded Sig8 from Boelen soon. I was looking for opinions from other EAD owners about the quality of the analog passthru.

I was planning on running the LF / RF outs of the EAD into my 2 channel preamp, but my preamp does not have either a HT bypass or a detented volume control, so keeping it at the right volume for HT use will be tough. So I figured what if I took the preamp outs and ran it into the 2 channel analog bypass input to the EAD? At 0 dB attenuation (effectively no volume reduction by the EAD) I'm wondering how much this might color the sound from my preamp?