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Hi guys, today I decided to run some tests to see how effective Isotek power conditioning is in a real world, functioning Hi-Fi system. This test is not a test for audiable differences, just simply how much mains noise is being eliminated from my system, compared to what coming into the GPO's in my environment. All test's were run with cables, being power and audio, in place as if the system is running on a daily basis. The main systems Isotek Sigmas was tested with its power on and off for all devices (except BR player, I needed it gpo for the analyzer) First off, here's a pic of the 15 amp gpo which my caravan is drawing it's power from, it's scoring 615 on the noise meter, a score out of 999. The van is fed with a 15A 15 meter extension cable: Next we have the Isotek EVO3 Mini Mira which I use for my TV, the first pic is the score for the gpo it's connected to, second pic is the score for the "Visual outlet" on the mini Mira, as you will see, this machine imo is the best performer, but can only use 1150 watts from that particular gpo, the second one labeled "component " has 1150watts also. Now we have the Isotek Sigmas Gii, this machine is plugged in using an oem version of their top line power cable, I didn't do a test without it being as it's rather difficult getting in behind this system being the environment it's set up in. But it don't think that it will make much difference with or without it, more on that later. First up, a video of the noise coming from the GPO the Sigmas is connected too. And a pic of the signal after the Sigmas Conditioning, all equipment powered off: And now with all the components on: Now the Polaris power board, before and after as above: Power coming into the board After filtering with the Polaris And now it gets interesting, I took out the Polaris power board to run some test using a standard black power cable and an Isotek Premier cable (the $199 rrp one) First video, the power before being conditioned. This is a pic of the power board being fed with the Isotek Premier Cable: And now, a standard black power cable: As you can see, they are exactly the same, so that will ignite some debate as to wether expensive power cables are doing anything, well it seems this particular cable is no better than a standard one. And now a video that leaves open a question as to what going on here in regards to each power socket being isolated from each other. If there's a technical reason for this that I don't know, please let's us know. And finally, an old Thor power board I've had for over 10 years. I hope you found this quick review helpful, one thing I know is that I have a quiet system, Is it worse without the conditioning, I have not tried as of yet, but it's reassuring to know that my components are getting clean power, and are protected from power surges, and that alone is worth the investment. Cheers.
Item: Isotek Sigmas G2 (US Plug) + original Isotek PA power cable (US Plug) Location: Sydney / Chatswood Price: $1300 price reduced Item Condition: 8/10 due to age only, functionally fine Reason for selling: selling for a friend Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: 6 x US plugs for your premium US plug cables Product reviews for your reference: https://www.techradar.com/au/reviews/audio-visual/av-accessories/isotek-sigmas-1059908/review (Please note, preference to local buyers for cash / pickup) Pictures: