Microtek instruments is the manufacturer of audio oscillator with counter [1mhz], ao 301c. The audio oscillator with counter has a frequency range of 10hz to 1mhz, in 5 decade steps. The product generates very low distortion; < 0.05% which is less than 0.05 percent. The product is preferred because of the compact design, low cost. The salient features of the audio oscillator with counter: