DTC
The Ayre QA-9 you mention does have discrete (assumed class A) circuitry. It's easily double the cost of the Tascam and I am not sure if it's still available. Could not find any listed on 'Bay. The other issue is that the QA-9 requires a stand alone computer to formulate the final .WAV or .FLAC audio file, which is not that convenient. The TASCAM is a stand alone solution, which produces .WAV files on memory cards or USB media directly.
Did discover that Brown Dog does make a SO8 to SO8 surface mount adapter to allow two OPA627 op amps to replace a 5532 dual. In my tape loop listening tests with the Spectral, I have found the OPA627 to be pretty close to the vinyl source, with a small amount of loss of SQ. For recording of vinyl for casual listening playback, this may suffice, assuming the BD adapters don't create stability problems with the 627s.