Do I need power conditioning


Hello everyone.
Need some help here. My system - Esoteric P700 transported modified with Trichord Research clock & digital board with power supplies; Musical Fidelity Trivista 21 DAC; Krell KRC-HR pre-amp; Krell FPB300c power amp; Monitor Audio Studio 20SE speakers; FPB fed by dedicated mains supply; Rest from a home made distribution box (which outperforms a VH Audio Hotbox) fed from the wall by an Eichmann Express power cable; then Pure Note Sigma power cable to KRC-HR; & VH AUdio flavour 4 to rest of components.

Problem - sometimes, the system sounds wonderful with a sound stage so encompassing that you hear ambience & echoes clearly from behind the listening position. Othertimes, it loses its magic.

Question 1) - Do I need power conditioning;

Question 2) - If yes, which conditioner would you recomment.

Any help & advise will be much appreciated.

Thanks.
solentgreen
Thanks for your responses, Vmpsbk & Bombaywalla. By losing its magic, I mean the soundstage shrinks; espeically the rear ambience. When its working well, and on a good recording, you can easily locate any echos in the recording from the rear. On some CDs with the recorded effects (e.g. the end of the last track on Dido's first CD), you can even hear the effect twirling around the listening room. When the system goes off, you lose all this. Also, the scale of the sound is just not as 'big' and it just sounds duller and you end up cranking up the volume to try to get it going but its just not as good as when its on song.
I do not notice any real change in the balance of the sound; say if there is any change in the bass etc.
The strange thing is that there does not appear to be any pattern as to the timing of this in a 24 hour cycle. If anything, it tends to go off for days at a time. I might add that I live in an apartment.
I have been reading up on the Shunyata Hydra units & was wondering whether I should give these a try. Thanks again for any ideas you might have.
I have had the same experience and can have great music for days and then degraded sound quality for a coulpe of days. I started a thread about this maybe 2-3 months ago and you can search for it under "Misc" or under my username. There were lots of good responses and suggestions.
I formerly worked for a public power company. Audio equipment is designed for 120w/60cycle. The power coming from your outlets does deviate (at times) from that. Also, there is "crud" (RF, etc.). Pretend your system is a main frame computer that needs clean power. Act accordingly. Contrary to Bombaywalla, I have never heard a system sound worse because of a power conditioner. Be forewarned, clean power is clean power and there is a lot of snake oil being sold in the name of "super clean". The power coming to the outlet is traveling through 15 cent a foot Romex. I believe every system would benefit from a BASIC conditioner that has enough capacity for the system. Anything beyond that is placebo.
JW,
Any recommendations on any basic conditioners that have worked for you?
Thanks!
bill
When I added the Audio Magic mini stealth AC purifier my sound became much cleaner and no downside. Audio Magic has continued to upgrade their purifiers. The PowerWing is another fine example of a great AC purifier. Just two to consider with excellent reviews and good dollar values. My sound is much more consistant any time of day.