I have installed 2 Jcat femto network cards in my streamer and replaced the Crystec clock by an Pink Faun Ultra OCXO clock at one of the cards. Both Jcats are fed by a high grade linear powersupply (Farad). The difference in sound between the Jcats is clear, but even more in comparison with the normal Ethernet output of the streamer. I have done some measurements on the digital signal. I think I have some clear differences now to show.