DSSF3 Light is a highly advanced sound analyzer greatly exceeding the usual FFT analyzer's performance. It is the best choice for learning sound measurement and for education. It is mainly applicable to a measurement of home audio and a car stereo, for a measurement of an electric circuit, and noise measurement. DSSF3 Light is equipped with the latest functions of the realtime analyzer, such as the signal generator, the FFT analyzer (Power spectrum, 1/1 and 1/3 octave band analysis, and Waterfall), the sound level meter (slow / fast preset), the oscilloscope, the sound recorder. More advanced functions such as the Impulse response measurement, the Running ACF measurement, and the THD analyzer can be purchased later. DSSF3 Light works with the latest soundboards. Two or more soundboard can be selected easily. The sampling rate can be set up to the maximum value allowed by the hardware.Signal generator,Recorder are No limitation