Sigmas is a mid-range, six-outlet mains distribution box from IsoTek, one of the best established names in mains filtration. The case is very solid with a thick alloy front panel. Two circuit breakers, one each for the high current and current portions of the unit, are mounted underneath and are reasonably easily accessible. The IsoTek Systems Sigmas has a marvelous effect on recorded music and is a spectacular piece of equipment. It improves the performance throughout the entire frequency range without upsetting the tonal balance or affecting the tempo.
It is a product that doesn’t compromise at any level and should add a positive and beneficial improvement to systems of modest expense and also dramatically enhance systems that are substantial in price.
Good condition. No box.