The distortion detection circuitry is 100% analog, digital micro-processing system used for display and calculation of overlap
Distortion Detection trigger level > 1.0% Harmonic Distortion
3 stage autoranging for wide range of input signal from 1Vrms – 200Vrms. (40,000 Watts at 1 ohm)
Auto-shut off timer 8 - 10 minutes after ON button is pressed
Battery self-test and display of condition when DD-1+ is initialized