Power Amp Valve Graded Low Anode Current (x1)

Marshall EL34 Power Amp Valve. In the power amp section you'll usually find two types of valve being employed. At the input you'll find another double triode, usually an ECC83, which functions as a phase splitter or inverter. Simply put, as its name suggests, this valve's job is to split your guitar's signal [which presents itself as a sine wave into two halves. Why? Because the beefy valves that make up the rest of the power amp [usually EL34s, EL84s, 5881s or 6L6s] work together as pairs in what is known as push/pull operation, that's why! The portion of the wave above the central line is dealt with by one power valve [or group of them] while the portion below is dealt with by the other valve [or valves].