This is an audiophile/videophile Coris Linear Power Supply upgrade for Oppo 203 & 205. 

Brand new, never used. I purchased it back this spring and ended up going another direction with a Panasonic 9000 and never installed it in my Oppo 203.

Coris specializes in high end Linear Power Supplies and has posts at AVS Forum (search Oppo Coris), DIY Audio and What's Best Forums. Very high quality and well built. Users report significant upgrades to audio and video picture quality with the vastly improved clean power supply. Switching power supplies, while cheap and efficient, add noise and grain to players performance.  Picked over the Oppomod version due to better parts, design and execution.

Looking for $375 net to me, includes free ground shipping in lower 48 USA only.

Price just lowered (7/23) to $350