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.
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.