Digital gear, just like your home computer, has advanced by leaps and bounds. A DAC that is 15 years old is as obsolete as a computer running Windows 3.1. A current mid priced CD player will easily outperform mid priced digital gear like your Theta from that era.
That said, I find it curious that you find your digital gear to be close to the performance of your analog. The logical conclusion is that the analog gear it is not properly aligned or it is worn out as suggested above.
That said, I find it curious that you find your digital gear to be close to the performance of your analog. The logical conclusion is that the analog gear it is not properly aligned or it is worn out as suggested above.