Just found out some interesting things on this CD transport. Don't know if there is anyone having the same experience:
1) You are in standby mode
2) Press <lay> button
3) Then press red <ower> button to power on CD transport as usual
Let me call this hidden mode. The sound stage is a bit different from normal. The difference is larger especially if not re-clock. It will resume back to normal mode once you power off by main switch or power off to standby mode.
To my setup, this hidden mode seems giving more details with warmer feeling. However, some copied CDs cannot be read properly. Is this hidden mode an undocumented feature on the servo part?