uSe extreMe caution inSiDe aMpS
“Valve amplifiers contain lethally high voltages,” says Cliff Brown of 633 Engineering. “Do not attempt to work on one unless you understand what you are doing. If in any doubt always get a qualified technician to do the work,” he cautions. An important point to raise is that capacitors inside amps can hold a lethal charge even some time after the amp is switched off, so unplugging the amp will not necessarily make you safe. Don’t take the risk – keep your hands or other implements well away from the exposed circuitry and get a qualified tech to perform inspection and maintenance inside your amp.