20Hz to 150KHz <0.3% THD SINE WAVE OR SQUARE OUTPUT A highly useful pocket sized signal generator for on-site servicing of audio equipment or for service bench use. Generates sine and square waveforms in 46 preset frequencies from 20Hz to 150kHz in two ranges (x1 and x100). Adjustable amplitude up to 8V peak to peak on square wave or 1.2V RMS on sine wave. Output impedance 600? for direct driving most audio equipment eg amplifiers, mixers etc. Also features a Sync output for triggering an oscilloscope. Includes test leads. Requires 9V battery (not supplied). A must have piece of test equipment for mobile audio techs, installers or engineers!