My question is:
How useful is this here in Singapore?
How many percent improvement in sound quality as compared to using normal direct power supply.
Which is better, using better powercables (i.e., expensive ones) or using the line conditioner.
(I know... some might say, use both, but I am on a VERY TIGHT budget).....
My two cents:
Is it needed? No.
Why? Because the dc regulation is many times more important than ac regulation. Your amp should be good enough to work in 200-260v ac.
Don't believe me? Ask any amp designer.
Do the power conditioners make a difference? Yes. Any thing in a system should make a difference. In my place even the placement of an empty box in difference areas of the same room makes a difference! Listening to the same song on the same system during different hours of the day is different too!
Is it (power conditioners) a good or a bad difference? Mostly bad. Not entirely, but mostly. Hence there is really no need for one in Spore.
Why is it a bad? I cannot speak for PS Audio power plants but the ones I used limited the dynamics - music becomes staid instead of bouncy - and soundstage narrowed. In a nutshell, you hear less, parly because these things cut off everything beyond a certain freq eg 18kHz (and this makes the system quieter). Several equipment manufacturers, incl Naim and Gryphon, specifically discouraged the use of conditioners, filters, regulators etc. I know of several people who have bought, even upgraded and later sold their PS Audio power plants. Quietly in the last case.
Is it better then to use a "better" power cord? In my limited experience, no need. Just use whatever if given by the equipment manufacturer. If the manufacturer wanted you to use it, it will give it to you, sometimes as an upgrade but it will be reasonably priced (measured as a percentage of equipment cost). Eg Burmester at present supplies a power cord that is not the normal run of the mill type for their equipment when you purchase a new piece.
Why? As mentioned earlier, anything incl power cord that is different from the one supplied will make a difference. You are better off saving the money to upgrade your equipment incl racks, and environment. If you go to SLS and SLT and get twenty difference power cords at $5/piece, they all sound different and good in their own way. Take your pick - Belden, Pirelli, Ericsson, Concordia, Kawasaki, Patelec, I-Sheng are all cable manufacturers (and they do not swindle consumers with their fancy cables, which cannot be said about most after market power cord companies). They all sound different and good but you need to pick the right one for your system to sound tonally "right".
Do you know anything about ac polarity? This has a greater impact on sound that merely power cordshttp://www.boundforsound.com/tweak.htm