From what i can gather, this is a device that uses several individual isolation transformers. My guess is that they are toroidal in design, so noise reduction may not be as good as if using a heavier, more expensive iron core E-I transformer, but it will still get rid of the major grunge. Given that the four outlets state "1200 watts total", i'm assuming they are fed off of one common transformer.
In my opinion, this would be a worthwhile device IF the price was right and one had very efficient speakers and / or a low to medium ( at most ) powered amp. If one had in-efficient speakers and / or a "thirsty" amp, i would probably go directly to the wall or look for a bigger isolation transformer for the amp itself. The reason for this is that a typical 1200 watt core is not enough to sustain a big amp under load.
As mentioned before, in order to avoid hysterisis distortion, one should run their iso transformers at no more than about 60% - 70% of full rated load. This would mean that those four 1200 watt outlets should have no more than about 750 - 850 watts drawn from them at most. You should also remember that anything tied into those four outlets are being fed from the same transformer, so they will "talk" to each other through the common AC connections.
Other than that, one could use all of the individual smaller outlets for sources, etc... Just pay attention to the above "headroom" rule in terms of how much each device pulls and what the transformer / outlet is rated for. If running a tubed preamp, the 1200 watt section would work quite well for that and then you could run the amp from the wall.
As a side note, bare in mind that what you are getting is a common connection for a bunch of smaller transformers being fed from one wall outlet. In effect, you have an "isolation transformer power strip". As such, all of your power is coming from ONE power cord connected to the wall outlet. Using a power cord that is both heavy enough in gauge and built with quality connections is MANDATORY to say the least. Sean
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PS... I wouldn't mind finding something like this locally for my Dad's system. If you don't want it, the guy wants to give it away and will cover shipping from Canada to Chicago, let me know : )
