Another vote for CAL in general but agree with drubin that you really should finish burn-in and tweak the sony if you like what it IS doing so far. For me, power cable switches helped the bass on my player (ML390S) - I'll bet the Sony will strike a better balance with your system afterward too. Regardless, you can (hopefully) always use the power cord on your next one...
Good luck
-j
Good luck
-j