High Voltage is the hard and heavy channel of 1.FM, the Swiss-based online radio network run by 1.FM GmbH. True to its name, it turns the amplifiers up: hard rock, heavy metal and high-energy guitar music, from the classic era through to modern acts, in a continuous presenter-free stream. It is one of dozens of themed 1.FM channels, each devoted to a single mood or genre, and it reaches rock and metal fans worldwide via the web and the network's apps.
