You might consider selling it and upgrading to a newer model... That's what I did. I figured that the resale value is still very reasonable, and you can probably get a very good deal on an 861se (or any other current Wadia player). It's not that the 850 is deficient. It's just that my warped cost/benefit analysis told me to sell now and upgrade with a player still in production.
If you would like to upgrade, consider the GNSC upgrade, the Shunyata Hydra, that new power cord (I'm using Omega Mikro, but haven't auditioned many), and a proper stand/isolation (I'm using one built by Mana).
Rob