Well I made the trade after some shoulder nudging from this forum. LEt me tell you newbs, obey the forum! My new player has HDMI. It's smaller. And most importantly, after some side by side comparisons, I believe the sound from the 46 meshes better with my parasound amp. One other side note is that the 45A is considerably louder than the 46. As a result, the 46 is great for those days when you aren't listening to Tool or Metallica, but rather Clapton unplugged or Beck Sea Changes.