DAC•WRAP Magnetic Shield

DAC•WRAP is a shield that isolates a DAC from magnetic and low frequency RF fields generated by proximate component power supplies, AC power cables, transformers and the household environment. For maximum sound transparency, you need to block external electromagnetic energy from entering a DAC's aluminum or steel enclosure where it will induce unwanted electrical current along internal signal and power paths. Dan suggests that Faraday's law and Hall effect are causal. DAC•WRAP is made from laminated foil sheets of highly permeable alloy with performance similar to MuMETAL®. Impinging magnetic fields are deflected by the foil to flow along the outside of the DAC. The beneficial effects are immediate and obvious.

DAC•WRAP forms a close fitting four-sided enclosure for lateral protection with generous overlap to an open front and rear for access to displays, IR controls and I/O. DAC•WRAP is available in a single-wrap or double-wrap installation; consider double-wrap on a highly resolving system.

Installation notes are here.

*MuMETAL® is a trademark of Magnetic Shield Corporation