Making your selection The Ultra Series Power Wedge® 1118 Power Pack Power Conditioners Power Link Power Cords FAQ Get Our Catalog

Above each isolated outlet is a three-position switch. This switch affects its associated isolated output only, allowing each output to have a unique configuration. Regardless of the switch position, the ground conductor of the AC receptacle is always grounded. Because every system is different, we recommend that you try each position to determine which works best in your situation: In the UP or NORMAL position, the neutral connection is configured much as would be found in a domestic AC system. In this position, the neutral is directly ground referenced.   In the MIDDLE or FLOAT position, the isolation transformer provides a floating output. In this position, the impedance of the attached equipment determines the neutral/ground reference.   In the DOWN or REFERENCE position, the isolation transformer provides fully balanced AC. In most cases, this position will give the best performance and provides the lowest overall noise floor. In determining the best switch position for your unique system, keep in mind the goal is to eliminate or reduce the amount of low level noise present, sometimes referred to as the "noise floor". This is not noise that you can "hear", but noise that can mask the low level music signals that contribute to things like sound stage dimensionality and detail. In REFERENCE mode, the balanced configuration provides maximum common mode noise cancellation and the maximum noise floor reduction.