The Pioneer Elite BDP-09 is an excellent Redbook CD player, easily equal to or surpassing well-regarded standalone CD players of its list price. Its Blu-ray is unsurpassed and its Redbook sound via 2ch analog out is better than the NAD M55 and M5 players which easily defeat any challenge from the Oppo SE, plus I prefer it to a friend's transport-driven Bryston DAC. Out of the box new, the BDP-09 is sonically convincing but it audibly improves during the first month or so of use. It's CD sound is meaty and vivid in the midrange, smooth and defined on top with excellent transient definition, and bass is extended and powerful. The BDP-09's build quality is beyond reproach, and it uses a recorder transport that's both robust and reduces read errors.
This is not a universal player. For that, the Marantz UD9004 is the best of its type now, though it costs more than twice the BDP-09. The 9004 does have outstanding SACD and DVD-A along with Redbook sound that is marginally better than the BDP-09. The BDP-09 has slightly better Blu-ray visual performance.
Arguably, the sweet spot price-wise for Redbook CD from a Blu-ray player is the Oppo 83SE Nuforce Edition. But if you want good Redbook CD sound from a Blu-ray player, the best deal in the hundreds is the Pioneer Elite BDP-23FD, quite good, stock.
Phil