Extracts the best from your hifi,provides protection for your gear,and you know that your equipment is getting stable,clean power.

Runs hot (i only power mine up for a listening sesh),fan noise is obtrusive but can be subdued,i have placed my P300 on soft squash balls cut in half,and then on carpet.

I tried to live without this unit in my system,as part of a downsizing exercise.I even had the house totally rewired with new consumer panel,outlets etc,which improved matters,but there were still clicks and noise when various appliances switched on and off,and during a serious listening sesh,that just won't do. So the P300 stays in my system,providing clean stable power to all front end components,with just the Chord power amp relying on the mains ac. P300 performed perfectly for the first 11 months,then went belly up,just went dead while the cd and pre amp were on standby,thankfully it was still under gaurantee,and the dealers fixed it within a week. Sound is more organic and natural when the P300 is supplying juice to the front end,voices that more real. So all in all,i can't live without it in my system,which must be a thorough recommendation.

increases dynamics, reduces noise floor, better soundstage and imaging

Runs very hot, not easy to position due to size (depth is too much wrt to height and width), I wish it could also show the input voltage and frequency (not a weakness)

A serious component every serious audio listener and audiophile should at least try. Most of the cases, the efforts are made for source components, amplifiers, speakers etc. But some gray areas are always there: Electricity, vibration, room acoustics etc. A "balanced" but moderate budget system with a better AC supply and good vibration control can beat many overpriced ones with poor AC, no vibration control etc. But PS300 is for every kind of audio setup regardless of cost. Most dramatic influence is seperation of instuments in music, improving soundstage, better dynamics with more detailed presentation. I use it at 230V and prefer SS1 due to better soundstage and depth than other wave combinations and sin waves. Heard their new Multiwave-2 but do not think I will need it. For fan noise as I think it is the only headache, I should say it is very much related to the bottom surface where PS300 is standing. I was using it on tick glass shelf and dissappointed with the huge noise even more than my power amp's fan. Then I tried it on carpet and other materials and discovered that carpet is insulating the noise but the hard surfaces like granite, glass are amplifying the fan noise. I put a hard carpet under PS300 with enough spacing to get air from bottom. Currently I can not hear any fan noise from my listening position, even in night listenings, the fan noise is so low that it is not a problem anymore. It is better to use it with PS Audio Ultimate Outlet. The combination even improves in all aspects. System: Audio Aero Capitol 24/192 cd player Audio Research VT-200 B&W Nautilus 803 (to be ugraded to 800 very soon) Transparent Reference Balanced Connector Transparent Audio Ultra Bicable Black Diamond Cones MK3 and MK4 (under source, power amplifer, speakers and audio rack) Black Diamond Source Shelf PS Audio HC Ultimate Outlet PS Audio P300 PS Audio Lab II Cables Finite Elemente Pagode Rack (customized for VT-200 with DIY supports and granite blocks)

Similar Products Used:

PS Audio Ultimate Outlet, PS Audio Lab II cables

Well built,unleashes full potential from your equipment.Female voices have that in your room quality,try Irish singer/songwriter Eleanor Mcevoy's cd/sacd hybrid "Yola" and see what i mean.

Noisy fan on quiet passages,challenging to install in a domestic environment (WAF factor)

After reading all the reviews,and the info on PS audio website,this seemed like a unique and original product,taking raw AC from the wall,converting it to DC,then back to pure AC. Packaging was good,three cartons,and the weight of the thing,phew! I ordered the UK export version,with three standard UK outlets,and a neutrik powercon outlet.First problem,where to put it,its too deep to go in my rack,so it went sideways on the bottom shelf.Second problem,the cooling fan was irritating on quiet passages,so I disconnected it,but then it became too hot with my current draw.Then it went on Michell tenderfeet (machined alloy cones about an inch high)and placed on the carpet under the rack,hey presto fan noise now subdued and not intrusive at all,and on these cones there is plenty of clearance between it and carpet. Installation problems solved,did it improve my system? you betcha! more realistic sound,more depth,any hardness before has now disappeared,and sounds nice and open and airy,the p300 seems to have drawn every last ounce of performance from my system.My system comprises: PS audio P300 powering all except poweramp Meridian 588 cd Michell gyrodeck with VC power supply Ortofon MC25fl cartridge Trichord dino phono amp Trichord dino phono power supply Chord CP2200 pre amp Chord SPM600 power amp PS audio minilab powercables and Isotek powercables Chord co odyssey biwire speaker cables B&W Nautilus 803's. Hifi+ (UK hifi magazine) noted how much better their Meridian cd sounded when powered by a mains regenerator and played through a Chord integrated amp (CPM3300 i seem to remember),and i totally agree with them,the p300 seems to make the most improvement on cd replay,the Meridian really sings now.I've played around a little bit with multiwave,and found differences to be very subtle indeed,SS1 is ok and PF2 brings centre vocals more to the front,still playing with the others! All in all,a great product,well built and engineered,definitely improved my system,wont be going back to raw AC.

Similar Products Used:

None.

very good at filtering ac power

expensive no surge protection or filtering for coax!

I bought this locally, brought it home hooked it up and compared it to my monster power HT2100 and to just going straight to the wall. Now this is being used in my audio room which also has a tv, but mostly a audio room. I did the standard listening test with the stereophile test cd 3 and the tv viewing of cable as well as avia setup DVD. Of course I tried everything with normal and with the vacum cleaner on (in room next door). My equipment: NAD c740 receiver Pioneer elite 301 disk changer Pioneer 739 cdr pioneer elite tape deck Sony Wega tv Sony progressive scan dvd player. old sony vcr sony playstation **kirby vacum (serious current draw) The p300 only has 4 outlets so I had to hook up a small powerstrip to get all my gear on it. I was impressed with the ps audio plant significant improvement over just power from the wall. My nad has some good filtering in it but the cleaner power helped the sound from the cd player. The cleaner power also helped the tv picture. And when I turned on the vacum cleaner the dvd picture stayed the same...impressive. BUT the cable tv signal artifacts are still there, because the P300 DOES NOT HAVE A COAX IN AND OUT. Okay the monster power 2000 did the same job at cleaning the audio signal from the cd player and the receiver. The dvd picture with the vacum cleaner on looked almost as good as when I had the p300. But since the monster 2000 has a coax filter the cable signal looked better. So at the end of it all the p300 did a better job filtering power but not 5 times better than the monster power (as the price would indicate). And man for $1000 ps audio should put some coax filtering and surge protection.

Similar Products Used:

Monster power ht2100 panamax

Greatly improves all aspects of listening: dynamics, soundstage, highs, lows, and clarity. Considerably less costly than a set of esoteric AC power cables.

Runs hot when consistantly carrying loads greater than 100 watts. Noisy fan (can be disconnected).

I'm not sure what the two reviewers prior to me are smoking or using for equipment, but this is one upgrade any serious audiophile or enthusiast must consider. Most dealers offer 30 day return policies as do PS Audio on their website. I auditioned the P300 for a weekend and 10 minutes after listening, immediately phoned my dealer to place an order. Contrary to what some reviewers have posted here, the P300 does not draw a significant amount of power. My Power Plant has the Multiwave feature although the audible differences are extremely minute. Although the manual discourages it, I'm able to connect my 125 Watt amp with no problem. My system consists of the following: Mark Levinson No37 CD Transport, Mark Levinson No360 DAC, Mark Levinson No334 Power Amp, Mark Levinson No380 PreAmp, and Monolithic Sounds PS1/HC1 Phono Stage, and Rega P25 Turntable, and Martin Logan SL3 Speakers, Audioquest Kilimanjaro Speaker Cables, Audioquest Anaconda and Better Cables XLR Interconnects. Listen for yourself and decide.

Similar Products Used:

Various Power Cables, PS Audio Ultimate Outlet.

Look, build quality, PS Audio's service.

Price for performance. Heat, and the esoteric B.S.hyperbole surrounding it.

Ok, impressive built product. WAY OVERPRICED for what it does. After 3 months of serious listening, my computers Tripp Lite LC1200 sounded better. Sound was lacking in dynamics and life. Audition a Brickwall before considering shelling out over 1200k for this. Seems to be very system specific. An ETA Sytems PD10VRS smoked this unit hardily. Even my roomate heard a difference. My system includes: Stax Omega II system, Transparent Ultra interconnects, and an NAD Silver Series CD player. P.S. does make a great power cable. This product misses the mark. At least for me.

Similar Products Used:

ETA Systems PD10VRS, Tripp Lite, Brickwall,

Looks nice, very audiophile...

Sounds less good than a $50 iso transformer bought on Ebay...

I have gotten much better results with commercial power conditioners than with the PS Audio power plants. I feel that commercial isolation transformers and constant voltage power conditioners work much better, and with less heat, than th PS Audio units. You try them and decide...

Similar Products Used:

Monster, PS Audio, Brickwall, Powervar, et.

Construction, good company to deal with.

Run hot, feel there are better conditioners for less.

Hate to rain on the parade, but my results were not as good as most here seem to have gotten. In my system, the PS over-sweetened the sound, and reduced the sense of dynamics. Basically made it boring. In comparative testing, the PS Audio was not nearly as good as the Price Wheeler Brickwall filter. Our audiophile session concluded with "send it back". Luckily, PS Audio has a good return policy and it all worked out. Also, my unit ran extremely hot when there was much current demand. To be fair, this unit is really only recommended for source components. I would recommend at least trying the Brickwall filters; they preserve dynamics and improve most every aspect of the sound. Also, they are well priced compared to the competition.

Similar Products Used:

Monster cable, Virtual Mode, Tripplite, Quiet Line, PS Audio.

It works

Expensive, runs hot

Summary: This is a good product - I’ve ordered one.

I tested the UK export model, which produces 240V AC at 50Hz, and had a demo unit in my home environment for three days. So this review is based on somewhat limited experience; however, since it is quite expensive, I was very thorough in checking it out! As Dorothy says, there’s no place like home…. and home is the best place to demo equipment like this.

When I first plugged the unit in I noticed nothing out of the ordinary. To my ears, the rave reviews posted in this section seemed a little over-enthusiastic. But it was getting late, my system was already sounding good, and I guess the mains was reasonably clean. Plus I was quite tired and not inclined to focus on any changes.

Next day I tested it thoroughly and began to notice what it did. I carefully warmed up all my equipment for a few hours then tried with it in and out of circuit, at various mains frequencies. Taking notes, I stuck with four well known tracks, mostly acoustic Jazz.

For starters, rather than drastically improve any one component, it prompted an overall change in the character of the system. This is probably because the power supplies in my components are extremely good already (see list below). I guess the first thing to be aware of is that the PS300 might be a panacea for cheaper components but the icing on the cake for some of the highest-end stuff. I’ll bet you wouldn’t notice a thing with, say, a Mark Levinson no.32 (which does its own mains regeneration) or Jeff Rowland battery preamp like the Coherence.

So, what changed? Well, for starters an increase in detail. The noise floor dropped, silences became “blacker”, and I was better able to pick out slight detail changes in, say, the decay on guitar strings or the reverberation of a saxophone. Next, much better dynamic definition. By this I mean I was better able to hear the difference in loudness from a guitarist caressing his strings to hammering them on with gusto. This is probably what is referred to as “microdynamics” in the likes of Stereophile; I didn’t know what they meant until the PS300 was in my system.

There’s a CD I have of diMeola/McLaughlin/de Lucia live in concert in San Francisco that really rocks, but the guitar playing is so frenetic much of the detail can be lost. With the PS300 in circuit I found it easier to differentiate between styles of playing and changes in rhythm – minor changes in volume that added to the feeling of being there.

Soundstage width didn’t increase although the soundstage did seem to “firm up” and iages at the fringes of the soundstage gained solidity; depth increased only slightly for me. Tonal balance shifted in favour of harmonic richness, although not far enough to my taste – at the moment I find my system a little “dry” in tonal balance, but I’m working on that!

I tried adjusting the mains frequency, reaching an upper bar of 90Hz before the PS300 ran out of steam. There was a slight increase in depth and a minor increase in a sense of power about the whole system - paradoxically at the same time it started to feel too tight, less musical. I felt unhappy with it at that frequency and still can’t put my finger on why. I left it at the default 50Hz afterwards.

So, in summary, subtle but powerful impact. The improvement in microdynamics convinced me I had to have on in my system, but on some other high-end systems you’d probably get more of an effect by, say, changing your cables for something else. I recently bought some Transparent MusicLink Super balanced interconnect to string between pre and power amps, and the effect it had was more noticable than that of the PS300 – an immediate increase in treble detail and musicality. However the PS300 is no less an upgrade in my system and definitely worth the money.

It’s built like a tank and gets very hot. The glowing blue logo on the front is a pain. The power on-off switch is too easy to accidentally hit, and it consumes about twice as much power as the attached equipment it is driving, so I’m unlikley to be leaving it powered on all the time (I usually leave the pre and DAC permanently on). That’s it for the bad points!

Associated equipment: Linn Sondek LP12, Basik/K9, Pioneer DV717 transport, dCS Elgar/Purcell DAC, Jeff Rowland Consummate preamp, Model 2+BPS power amp, Wilson System 5.1 loudspeakers, Transparent Plus/Super cables.

Similar Products Used:

Bed Duncan mains filter

Everything the manufacturer claims

Power consumption

I recently hooked up the P300 and, out of the box, was blown away -- you can't call yourself an audiophile if you haven't got one of PS Audio's power generators in your system. I've had the audio disease for 30 years and this is without question the single best upgrade since mono-stereo! I did find that the 120 power setting hardened the sound a bit in my system (Levinson, Audio Research, Magnaplaner, Cardas Golden Cross). I think 80-90 works best (still working on it).
BRAVO!