I'm checking back here.
Ryan was selling the Burr Brown OPA627AU's for $45 which is outrageously expensive so i was able to get three on ebay for $22.50
Pop'd them in and the sound exceeded that of the OPA2604. It was a somewhat clearer, more detailed, and less grainy than the one before. The OPA627 is much better.
the op amps were running a little warm so i put some aluminum heatsinks on them, also added a 80mm below and above the sound card for good air flow cooling. Datasheet says they can go up to 125C, but i did it just in case.
Now going to buy the LM4562 Op Amp which people say beats the OPA627 in term of sound quality and see if this is true when applied on the Maverick D2. I will re-listen to all three again (OPA2604,2x OPA627AU SOIC,LM4562) and let know what i think.
Edited by cssarrow - 7/18/12 at 4:05am