"Just how it works and what it does may be a bit of a mystery, but the Zapperator is still an interesting idea. However, we found in tests involving a wide variety of kit that it has only very minor and quite negligible effects on sound. Russ Andrews' 60-day home trial makes experimenting more attractive, however"
- Seemed to give an increase in tonality and imaging
- Not 100 per cent convinced it offers a serious upgrade
- RFI may not be the only cause of interference