Sounds like new equipment syndrome. Initial insertion inherently brings on analytical mode of listening. Generally, we give new item at least 100 hours for burn in or adjustment of perceptions, could be more hours in some cases. We then, over time, almost imperceptibly fall into music lover mode, or we can't seem to get back there. New piece stays on one hand, out the door on the other.
Sometimes, in thinking about this, I wonder about all the cast offs people sell on used market, obviously, replacements bettered the item being sold. Usually, I like to ask what replaced item sold, appearance of lateral move can be bewildering, but then some people like to churn equipment.