My opinion per my experience is AES/EBU cable sound signature presentation does evolve with hours of use. I perceived a change pretty early on, say 20 hour mark, but believe presentation continued to more subtibly evolve over several hundred hours. I concede that some of my appreciation for longer term evolving change could be me as well becoming more and more accustomed to a sound signature I find to be more right. However, I would find myself going damn, that sounds good and having more of those better sounding realization moments as more hours accumulated. For reference, I have been using a Sablon AES/EBU with Bocchino palladium xlr terminations.