Oppo UDP-205 Op Amp, Linear Power Supply


I have the Oppo UDP-205.  I understand there are third party Op Amp, Linear Power Supply to buy that improves the unit.  What have you tried that worked.  I am game to improve mine.  Thank you!
dcaudio
I had my 205 modded by Ric Schultz of EVS. Make a noticeable difference, quieter, deeper sound stage. He did more than just the power supply.

Now I'm interested in trying the Vibrapods!
@unsound - no, I never paid much attention to tweaks, footers, etc. 
I don't know what made me even think to put them under the Oppo.  But after that, I put them under my Heed dac and they did the same thing - an added sense of harmonic richness.  Taking them out made the sound flatter and more....digital?  They're certainly cheap enough to try.  Just make sure to use a coaster or something because those things ooze.  Really. 
I suggest that before you do surgery (or spend a lot of money otherwise) on your Oppo that you consider letting the Oppo feed an external DAC.  First of all, any modifications, unless they are easily reversible, will kill its resale value.  Also, it has never been very hard to find a DAC at a reasonable price that will outperform the DAC section of the Oppo.