Mostly good responses.
I agree on the system's resolution part which suggests that a system with higher resolution will yield a bigger difference in sound with respect to better CDPs. When I had a fairly low-end system, I couldn't seem to hear audible differences between entry-level sources. To my ears, the Arcam Alpha 8 and Marantz CD-63kISig that I had at that time all sounded the same. Just when my system progressed further to some mid-end stuff, I replaced the Arcam with a Sony XA7ES and heard an audible improvement, a sound that was much focused and refined. I could hear more details in the recording, and the bass was of higher quality. That was the point when I believed that a better CDP would give a better sound. After a few years later I picked up the Krell KPS-30i. Again, I heard a difference but this time it was not as significant compared to the jump in sonics between the lowly Arcam and the Sony. This just proves that difference in sound between players can sometimes be fairly unpredictable as it varies from noticeable to almost negligible.
The poster of this thread has some great gears, and I think he'll benefit with a better CDP. I'm not too familiar with the Pioneer Elite PD-65, but I think it's a fairly low-budget player -I may be wrong. I think the real question that should be asked is how much improvement he can expect if he were to upgrade his Pioneer to the Cambridge Audio 840C, or something else for that matter. Unfortunately, no one can answer that for him except the listener himself.
Good luck.
I agree on the system's resolution part which suggests that a system with higher resolution will yield a bigger difference in sound with respect to better CDPs. When I had a fairly low-end system, I couldn't seem to hear audible differences between entry-level sources. To my ears, the Arcam Alpha 8 and Marantz CD-63kISig that I had at that time all sounded the same. Just when my system progressed further to some mid-end stuff, I replaced the Arcam with a Sony XA7ES and heard an audible improvement, a sound that was much focused and refined. I could hear more details in the recording, and the bass was of higher quality. That was the point when I believed that a better CDP would give a better sound. After a few years later I picked up the Krell KPS-30i. Again, I heard a difference but this time it was not as significant compared to the jump in sonics between the lowly Arcam and the Sony. This just proves that difference in sound between players can sometimes be fairly unpredictable as it varies from noticeable to almost negligible.
The poster of this thread has some great gears, and I think he'll benefit with a better CDP. I'm not too familiar with the Pioneer Elite PD-65, but I think it's a fairly low-budget player -I may be wrong. I think the real question that should be asked is how much improvement he can expect if he were to upgrade his Pioneer to the Cambridge Audio 840C, or something else for that matter. Unfortunately, no one can answer that for him except the listener himself.
Good luck.