The Pioneer PD-S 502 is a CD player released by Pioneer. It features a stable platter mechanism, 18-bit dual D/A converter, and a direct digital sync control system.

Upgraded 12-inch carbon fiber driver ensures superior low-frequency performance, adapted from high-end PA speakers.
Dual AMT tweeters in a dipole setup deliver precise and natural high-frequency sound.
Retains analog three-way active system with no DSP, appealing to purist audiophiles.