Another option. Send your Oppo 105 to Dan Wright (Modwright) for his $2500 mod which includes an outboard tubed power supply and tubed (6SN7) output among many other improvements. I further treated mine to NOS rectifier and output tubes. Couldn't be happier. And dealing with Modwright was a real pleasure.
OPPO 105; how to beat it and at what price?
I am in the process of building my reference system around my new Wilson Alexia’s. I am currently using the OPPO 105. How much would I have to spend to get a significant audible improvement? What would that unit be?