Compared to stock. Honestly it has been so long since I tried the LM4562 I can't recall. I just remember when I tried the combination I suggested it hit my sweet spot and locked in what I was looking for. I did not carry it any further as there was no need. I will warn you that no opamp is going to turn a $300 amp into a $2000 amp. At the $300 price point your risk level is very low. Everyone hears differently and my experience is listening to mostly classical music. All I can tell you is that I have 2 tube amps and I have added the Auralic Taurus and the M Stage is not in the league of the Auralic but not completely embarrassed with the HD800's. That is high praise for the $300 M Stage.
Which way do you put the LM49710HA in? Can't see any markings to tell the tale. [Like with the LM4562 - there is a tiny notch in it, like with other conventional op-amps]
Edited by conquerator2 - 3/30/14 at 11:38am