I second what allanw says about the significance of the ModWright power supply. A separate, tube-rectified power supply is the quietest type that you can get; it's not common because it's so expensive. And you can even update the already-excellent umbilical that's made with Cardas wire with the WyWires version that was created in partnership with ModWright. Good power is the start of great sound, right?
Some of the internals of the Oppo are also improved: better wiring, Bybee products, etc. That's a big plus.
And of course, the tube-based output stage is a tremendous benefit in bringing a more "analogue" sound to the digital format. You get the best of both worlds, and that's the endgame. I like that the "Truth" modification takes a holistic approach to this process - improve the functional basics of the player and then bring a more analogue sound through the tube-based output stage.
Expensive? Of course - high-quality custom work always is.
Worth it? Every penny.
Some of the internals of the Oppo are also improved: better wiring, Bybee products, etc. That's a big plus.
And of course, the tube-based output stage is a tremendous benefit in bringing a more "analogue" sound to the digital format. You get the best of both worlds, and that's the endgame. I like that the "Truth" modification takes a holistic approach to this process - improve the functional basics of the player and then bring a more analogue sound through the tube-based output stage.
Expensive? Of course - high-quality custom work always is.
Worth it? Every penny.