I also had an SCD-1. The 5400 outclasses it in every way except cosmetically. The SCD-1 is one of the finest looking pieces of audio jewelry I've yet to lay eyes on. Is anybody running XLR interconnects on their Sony 5400es? Was wondering if this player was a fully balanced unit. Don't see it advertised as such. I guess it would be a no brainer if it was. Just curious if anybody could give a little insight.