When I reviewed it in my setup, the DP400 had already been in use for a few months so running in will probably not be a factor anymore. Nevertheless, it turned out that the player does need a good warmup after it has been off the juice even for an hour or so. The picture above was only for warming up, the Accuphase wasn't actually listened to like this.
I should say upfront that I heard this very same player in the owner's setup too, before starting on this review. In his setup already a few of my preconceptions proved to be misplaced. Yes, my instincts can be off, too! This friend's setup is very different from mine. He has Jadis pre-power amplification and Sonus Faber Amator speakers. Indeed nonthing like my own setup. But I know his system well and have heard many components there, including some of my own. First thing I noticed was that the treble is very smooth. Much, much, much better that I had feared. From what I heard, it sounded like it could be on par with my Levinson 390S, and that player is ever so super-smooth. Second, the Accuphase didn't sound hurried. In fact it was even slightly relaxed, although it was clearly fast and dynamic. Still, with no other player to compare it too, I couldn't make definitive conclusions.
Back to the review in my setup. We connected up the DP400 and went to get some food. When we came back, and listening began, the player had been powered up for more than an hour, maybe an hour and a half. I was using my preferred Transparent Ultra XLR interlinks and a Lapp powercable. Right after the first notes it was again clear that this is a smooth performer. There's just no harshness here. I am used to a sound like that but certainly didn't expect it from an Accuphase! After a few minutes though, we started feeling like the Accuphase was too laid back, too restrained, and dynamically limited. That was strange because in the owner's setup, the DP400 had proven very dynamic. Much more so than his previous Meridian 506.20. But right now, the Accuphase sounded like it was, in fact, a Meridian! That wasn't good. Unsatisfied we swapped back to the Levinson and were shocked at how much better it sounded. Not only was the 390S much fuller, more colourful and smoother, it also had a much broader soundstage with better layering front to back as well as side to side and finally it was also more dynamic. We scratched our heads in unbelief. Was the Accuphase really this mediocre? Couldn't be. Then I realised that something must be askew and remembered how bad my Sony components had performed using Transparent cables. Indeed, the Transparent cables' network boxes can be difficult to drive for some components. The Levinson has no problem with it, nor do many of my components, but use a component with an insufficiently low-impedance output stage and the Transparent starts to sound, well, not very transparent at all. So, out went the Transparent and in came a Cardas Quadlink. What. A. Difference. Back was the jumpy, enthusiastic and lively player that we had heard in the owner's setup. It was still smooth, never aggressive, but now it also had punch. But we still wanted more. So out went the Lapp (this powercable, too, can smother the sound if it is ill-matched) and in came a Belden. Much better still.