These requirements have led to the use of transistors in the design of high-power , audio driver amplifiers. Fortunately, the ... This amplifier, which is presently in production, is capable of delivering in excess of 1000 watts and weighs under 10 pounds. The mod- of ... Figure 2 is a schematic diagram of the basic amplifier and Figure 3 shows the finished breadboard with its keying circuit and dummy load.