Khun Jit,
Sorry to say that i've not yet decided to "up" power conditioners. After trying 2 of the most promising AC Regenerator concept, Powerplant PS1200 (RSP US$5,000) and Audiophile APS Purepower 1050 (RSP US$ 2,500), i still manage to keep my money.�

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In fact, both AC regenerators did improve the sound of my system in some respects. To be exact, Purepower matched my taste better than Powerplant but anyway the overall improvement was not so significant.� Perhaps, my room has less problem with AC Noise than i thought.
Besides, these hi-end power correction devices are so expensive that i believe the same amount of money should be better spent on upgrading main compenents e.g. Pre/Pro or Preamp. If Purepower is around $1,600 -1,800, i might have bought it.
So now i hold my buying decision until i find a good worthy power conditioner.
In fact, i'm now considering to return to "Tube" again because after 8 months of my life without tube and having to live with all-out solidstate system, i find my emotional connection with music has lost its way.�
