DTC
The QB-9 is the D/A. The QA-9 is the A/D.
I have yet to see a QA-9 for sale. I went ahead and bought a TASCAM 3000 on fleabay for $720 new. For that price I can afford to try some op amp mods. I think I can remove the 5532s and replace with OPA627s on a Brown Dog adapter. For my purposes, only the input buffer amps need to subbed out. Once I have the digital file, it will be played back in my Bryston BDP/BDA combo which uses Class A discrete analog stages.
If in the future a QA-9 becomes available, I'll consider it at that time, depending on the results I get with the Tascam.
The QB-9 is the D/A. The QA-9 is the A/D.
I have yet to see a QA-9 for sale. I went ahead and bought a TASCAM 3000 on fleabay for $720 new. For that price I can afford to try some op amp mods. I think I can remove the 5532s and replace with OPA627s on a Brown Dog adapter. For my purposes, only the input buffer amps need to subbed out. Once I have the digital file, it will be played back in my Bryston BDP/BDA combo which uses Class A discrete analog stages.
If in the future a QA-9 becomes available, I'll consider it at that time, depending on the results I get with the Tascam.