Oppo 105 stock vs Oppo 105 Modwright

This might help. It's the 6 Moons review of the Modwright Oppo 105: http://www.6moons.com/audioreviews/modwright11/1.html

Combine the Absolute Sound review of the stock 105 with the 6 Moons review of the mod and you'll likely have an accurate picture. http://www.theabsolutesound.com/articles/oppo-bdp-105-universal-blu-ray-player-and-dac/

I have the ModWright Oppo 105 and can switch between the stock and modified very easily. The ModWright tube mod with the right tubes is on another level. The ModWright capacitors and beefy external power supply brings a fleshiness and wholeness to the music and with more detail. To me me the ModWright brings more emotion to the 105.