This is my 'new to me' Canadian Vintage Tube amp, made in Montreal QC.The first thing was to ground the plug. I used an extra computer plug as I have heaps laying about. They are really well sheilded and exactly what you need. Just connect the white and black where they were before and use the green to ground to the amp chasis with some sort of connector you can get around a bolt and nut. Easy peasy. No more zappy zappy.